IOTA/IOTA-ES occultation update for (2690) Ristiina / UCAC4 357-130382 event on 2024 Nov 04, 13:18 UT Visible from Summary ------- On 2024 Nov 04 UT, the 18.6577040153691 km diameter asteroid (2690) Ristiina will occult a 11.1 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.47 mag to 17.54 mag (the magnitude of the asteroid) for at most 0.550 seconds. This update is based on, astrometry for the asteroid kindly provided by the IAU Minor Planet Center. This work has made use of data from the European Space Agency (ESA) mission Gaia (http://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, http://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. The event at a glimpse ---------------------- * Rank: 99 * date and approx. time of event: 2024 Nov 04, 13:15 - 2024 Nov 04, 13:21 * geocentric midpoint of event [JD]: 2460619.05448463 * magnitude of target star: 11.07 * magnitude drop [mag]: 6.47 * estimated maximum duration [s]: 0.550 * Moon: 9 % sunlit, 20° distance * Sun: 52° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 20 * 1 sigma uncertainty interval [path widths]: +/- 0.17 * 1 sigma uncertainty interval [seconds]: +/- 0.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.001", 96°) * approx speed of asteroid's shadow [km/s]: 34.6621 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 357-130382 by 2690 Ristiina on 2024 Nov 4 Centre Star Star Sun Path Limits Error Limits Alt E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4 Crn o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " Latitude Latitude Latitude Latitude - 51 0 0 20 59 4 13 15 31.3 0 110 44 20 53 23 21 4 46 20 51 29 21 6 40 .... - 50 0 0 20 38 17 13 15 31.3 1 111 45 20 32 35 20 43 59 20 30 41 20 45 53 -0.08 - 49 0 0 20 17 23 13 15 31.4 2 111 46 20 11 41 20 23 5 20 9 47 20 24 59 -0.17 - 48 0 0 19 56 23 13 15 31.6 3 111 47 19 50 41 20 2 5 19 48 47 20 3 59 -0.21 - 47 0 0 19 35 16 13 15 31.8 4 112 48 19 29 34 19 40 59 19 27 40 19 42 53 -0.23 - 46 0 0 19 14 5 13 15 32.1 5 112 49 19 8 22 19 19 47 19 6 28 19 21 41 -0.24 - 45 0 0 18 52 48 13 15 32.4 6 112 49 18 47 5 18 58 30 18 45 11 19 0 24 -0.25 - 44 0 0 18 31 26 13 15 32.8 7 113 50 18 25 44 18 37 9 18 23 50 18 39 3 -0.25 - 43 0 0 18 10 1 13 15 33.3 8 113 51 18 4 19 18 15 44 18 2 24 18 17 38 -0.26 - 42 0 0 17 48 32 13 15 33.8 9 113 52 17 42 50 17 54 15 17 40 55 17 56 9 -0.26 - 41 0 0 17 27 0 13 15 34.4 10 114 53 17 21 18 17 32 43 17 19 23 17 34 37 -0.27 - 40 0 0 17 5 25 13 15 35.0 11 114 53 16 59 43 17 11 8 16 57 49 17 13 2 -0.27 - 39 0 0 16 43 49 13 15 35.7 12 114 54 16 38 6 16 49 31 16 36 12 16 51 26 -0.27 - 38 0 0 16 22 10 13 15 36.5 13 114 55 16 16 28 16 27 53 16 14 34 16 29 47 -0.27 - 37 0 0 16 0 31 13 15 37.3 14 115 56 15 54 49 16 6 13 15 52 54 16 8 8 -0.27 - 36 0 0 15 38 51 13 15 38.2 15 115 56 15 33 9 15 44 33 15 31 15 15 46 28 -0.27 - 35 0 0 15 17 11 13 15 39.2 17 115 57 15 11 29 15 22 53 15 9 35 15 24 48 -0.28 - 34 0 0 14 55 31 13 15 40.2 18 116 58 14 49 49 15 1 14 14 47 55 15 3 8 -0.28 - 33 0 0 14 33 53 13 15 41.3 19 116 58 14 28 11 14 39 35 14 26 17 14 41 29 -0.28 - 32 0 0 14 12 16 13 15 42.4 20 116 59 14 6 34 14 17 58 14 4 40 14 19 52 -0.28 - 31 0 0 13 50 41 13 15 43.6 21 117 60 13 44 59 13 56 23 13 43 5 13 58 17 -0.28 - 30 0 0 13 29 8 13 15 44.9 22 117 60 13 23 27 13 34 50 13 21 33 13 36 44 -0.28 - 29 0 0 13 7 39 13 15 46.2 23 117 61 13 1 57 13 13 21 13 0 3 13 15 15 -0.28 - 28 0 0 12 46 13 13 15 47.6 24 117 61 12 40 32 12 51 55 12 38 38 12 53 48 -0.28 - 27 0 0 12 24 51 13 15 49.0 25 118 62 12 19 10 12 30 33 12 17 16 12 32 26 -0.28 - 26 0 0 12 3 34 13 15 50.5 26 118 62 11 57 53 12 9 15 11 55 59 12 11 9 -0.28 - 25 0 0 11 42 22 13 15 52.0 27 118 63 11 36 41 11 48 3 11 34 48 11 49 57 -0.28 - 24 0 0 11 21 16 13 15 53.6 28 118 63 11 15 35 11 26 56 11 13 42 11 28 50 -0.28 - 23 0 0 11 0 15 13 15 55.3 29 119 63 10 54 35 11 5 56 10 52 42 11 7 50 -0.28 - 22 0 0 10 39 22 13 15 57.0 30 119 64 10 33 42 10 45 2 10 31 48 10 46 56 -0.28 - 21 0 0 10 18 35 13 15 58.8 31 119 64 10 12 56 10 24 15 10 11 2 10 26 9 -0.29 - 20 0 0 9 57 57 13 16 0.7 32 120 64 9 52 17 10 3 36 9 50 24 10 5 30 -0.29 - 19 0 0 9 37 26 13 16 2.5 33 120 64 9 31 47 9 43 5 9 29 53 9 44 59 -0.29 - 18 0 0 9 17 4 13 16 4.5 34 120 65 9 11 25 9 22 43 9 9 32 9 24 36 -0.29 - 17 0 0 8 56 51 13 16 6.5 35 121 65 8 51 12 9 2 30 8 49 19 9 4 23 -0.29 - 16 0 0 8 36 47 13 16 8.5 36 121 65 8 31 9 8 42 26 8 29 16 8 44 19 -0.29 - 15 0 0 8 16 54 13 16 10.6 37 121 65 8 11 16 8 22 32 8 9 23 8 24 25 -0.29 - 14 0 0 7 57 11 13 16 12.8 38 122 65 7 51 33 8 2 49 7 49 41 8 4 42 -0.29 - 13 0 0 7 37 39 13 16 15.0 39 122 65 7 32 2 7 43 17 7 30 9 7 45 9 -0.29 - 12 0 0 7 18 18 13 16 17.2 40 122 65 7 12 41 7 23 56 7 10 49 7 25 48 -0.29 - 11 0 0 6 59 10 13 16 19.5 41 123 64 6 53 33 7 4 47 6 51 40 7 6 39 -0.29 - 10 0 0 6 40 13 13 16 21.9 42 123 64 6 34 37 6 45 50 6 32 44 6 47 42 -0.29 - 9 0 0 6 21 29 13 16 24.3 43 123 64 6 15 53 6 27 5 6 14 1 6 28 58 -0.29 - 8 0 0 6 2 58 13 16 26.7 44 124 64 5 57 23 6 8 34 5 55 31 6 10 26 -0.29 - 7 0 0 5 44 41 13 16 29.2 45 124 63 5 39 6 5 50 16 5 37 14 5 52 8 -0.29 - 6 0 0 5 26 37 13 16 31.7 46 125 63 5 21 2 5 32 13 5 19 11 5 34 4 -0.29 - 5 0 0 5 8 48 13 16 34.3 47 125 62 5 3 14 5 14 23 5 1 22 5 16 15 -0.29 - 4 0 0 4 51 14 13 16 36.9 48 125 62 4 45 39 4 56 48 4 43 48 4 58 40 -0.29 - 3 0 0 4 33 54 13 16 39.5 49 126 62 4 28 20 4 39 28 4 26 29 4 41 19 -0.29 - 2 0 0 4 16 50 13 16 42.2 50 126 61 4 11 16 4 22 23 4 9 25 4 24 15 -0.29 - 1 0 0 4 0 1 13 16 44.9 51 127 60 3 54 28 4 5 34 3 52 37 4 7 25 -0.29 0 0 0 3 43 28 13 16 47.6 52 128 60 3 37 56 3 49 1 3 36 5 3 50 52 -0.29 1 0 0 3 27 12 13 16 50.4 53 128 59 3 21 40 3 32 45 3 19 49 3 34 35 -0.29 2 0 0 3 11 12 13 16 53.2 54 129 59 3 5 40 3 16 44 3 3 50 3 18 35 -0.29 3 0 0 2 55 30 13 16 56.1 55 129 58 2 49 58 3 1 1 2 48 7 3 2 52 -0.29 4 0 0 2 40 4 13 16 59.0 56 130 57 2 34 33 2 45 36 2 32 43 2 47 26 -0.29 5 0 0 2 24 56 13 17 1.9 57 131 57 2 19 25 2 30 27 2 17 35 2 32 18 -0.29 6 0 0 2 10 6 13 17 4.8 58 132 56 2 4 36 2 15 37 2 2 46 2 17 27 -0.29 7 0 0 1 55 34 13 17 7.8 59 133 55 1 50 4 2 1 5 1 48 14 2 2 55 -0.29 8 0 0 1 41 21 13 17 10.8 60 133 54 1 35 51 1 46 51 1 34 1 1 48 41 -0.29 9 0 0 1 27 26 13 17 13.8 61 134 54 1 21 56 1 32 55 1 20 6 1 34 45 -0.29 10 0 0 1 13 49 13 17 16.8 61 135 53 1 8 20 1 19 19 1 6 31 1 21 8 -0.29 11 0 0 1 0 32 13 17 19.9 62 136 52 0 55 4 1 6 1 0 53 14 1 7 51 -0.29 12 0 0 0 47 35 13 17 22.9 63 138 51 0 42 6 0 53 3 0 40 17 0 54 53 -0.29 13 0 0 0 34 56 13 17 26.0 64 139 51 0 29 28 0 40 24 0 27 39 0 42 14 -0.29 14 0 0 0 22 38 13 17 29.2 65 140 50 0 17 10 0 28 5 0 15 21 0 29 55 -0.29 15 0 0 0 10 39 13 17 32.3 66 142 49 0 5 12 0 16 6 0 3 23 0 17 56 -0.29 16 0 0 - 0 1 0 13 17 35.5 66 143 48 - 0 6 26 0 4 28 - 0 8 15 0 6 17 -0.29 17 0 0 - 0 12 18 13 17 38.6 67 145 47 - 0 17 44 - 0 6 51 - 0 19 33 - 0 5 2 -0.29 18 0 0 - 0 23 16 13 17 41.8 68 147 46 - 0 28 42 - 0 17 49 - 0 30 31 - 0 16 0 -0.30 19 0 0 - 0 33 53 13 17 45.0 68 149 45 - 0 39 19 - 0 28 27 - 0 41 7 - 0 26 38 -0.30 20 0 0 - 0 44 9 13 17 48.2 69 151 45 - 0 49 35 - 0 38 43 - 0 51 23 - 0 36 55 -0.30 21 0 0 - 0 54 5 13 17 51.4 70 153 44 - 0 59 30 - 0 48 39 - 1 1 19 - 0 46 51 -0.30 22 0 0 - 1 3 39 13 17 54.7 70 155 43 - 1 9 4 - 0 58 14 - 1 10 53 - 0 56 26 -0.30 23 0 0 - 1 12 53 13 17 57.9 71 157 42 - 1 18 17 - 1 7 28 - 1 20 6 - 1 5 39 -0.30 24 0 0 - 1 21 44 13 18 1.2 71 160 41 - 1 27 9 - 1 16 20 - 1 28 57 - 1 14 31 -0.30 25 0 0 - 1 30 15 13 18 4.4 72 163 40 - 1 35 39 - 1 24 51 - 1 37 27 - 1 23 2 -0.30 26 0 0 - 1 38 24 13 18 7.7 72 166 39 - 1 43 48 - 1 33 0 - 1 45 36 - 1 31 12 -0.30 27 0 0 - 1 46 11 13 18 10.9 73 169 38 - 1 51 35 - 1 40 47 - 1 53 23 - 1 38 59 -0.30 28 0 0 - 1 53 37 13 18 14.2 73 172 37 - 1 59 0 - 1 48 13 - 2 0 48 - 1 46 25 -0.30 29 0 0 - 2 0 40 13 18 17.5 73 175 36 - 2 6 4 - 1 55 17 - 2 7 52 - 1 53 29 -0.30 30 0 0 - 2 7 22 13 18 20.7 73 178 35 - 2 12 45 - 2 1 59 - 2 14 33 - 2 0 11 -0.30 31 0 0 - 2 13 42 13 18 24.0 73 182 35 - 2 19 5 - 2 8 19 - 2 20 52 - 2 6 31 -0.30 32 0 0 - 2 19 39 13 18 27.3 73 185 34 - 2 25 2 - 2 14 16 - 2 26 49 - 2 12 29 -0.30 33 0 0 - 2 25 15 13 18 30.5 73 188 33 - 2 30 37 - 2 19 52 - 2 32 25 - 2 18 4 -0.30 34 0 0 - 2 30 28 13 18 33.8 73 192 32 - 2 35 50 - 2 25 5 - 2 37 37 - 2 23 18 -0.30 35 0 0 - 2 35 18 13 18 37.1 73 195 31 - 2 40 41 - 2 29 56 - 2 42 28 - 2 28 9 -0.30 36 0 0 - 2 39 47 13 18 40.3 73 198 30 - 2 45 9 - 2 34 25 - 2 46 56 - 2 32 37 -0.30 37 0 0 - 2 43 53 13 18 43.6 73 201 29 - 2 49 15 - 2 38 31 - 2 51 2 - 2 36 43 -0.30 38 0 0 - 2 47 36 13 18 46.8 72 204 28 - 2 52 58 - 2 42 14 - 2 54 45 - 2 40 27 -0.30 39 0 0 - 2 50 57 13 18 50.0 72 207 27 - 2 56 19 - 2 45 36 - 2 58 6 - 2 43 48 -0.30 40 0 0 - 2 53 56 13 18 53.3 72 210 26 - 2 59 17 - 2 48 34 - 3 1 4 - 2 46 47 -0.30 41 0 0 - 2 56 32 13 18 56.5 71 213 25 - 3 1 53 - 2 51 10 - 3 3 40 - 2 49 23 -0.30 42 0 0 - 2 58 45 13 18 59.7 71 215 24 - 3 4 6 - 2 53 23 - 3 5 53 - 2 51 36 -0.30 43 0 0 - 3 0 36 13 19 2.9 70 217 23 - 3 5 57 - 2 55 14 - 3 7 44 - 2 53 27 -0.30 44 0 0 - 3 2 4 13 19 6.0 69 219 22 - 3 7 25 - 2 56 42 - 3 9 12 - 2 54 55 -0.30 45 0 0 - 3 3 9 13 19 9.2 69 221 21 - 3 8 30 - 2 57 48 - 3 10 17 - 2 56 0 -0.30 46 0 0 - 3 3 52 13 19 12.4 68 223 20 - 3 9 13 - 2 58 30 - 3 11 0 - 2 56 43 -0.30 47 0 0 - 3 4 12 13 19 15.5 67 225 19 - 3 9 33 - 2 58 50 - 3 11 20 - 2 57 3 -0.30 48 0 0 - 3 4 9 13 19 18.6 67 226 18 - 3 9 30 - 2 58 48 - 3 11 17 - 2 57 1 -0.30 49 0 0 - 3 3 44 13 19 21.7 66 228 17 - 3 9 5 - 2 58 23 - 3 10 52 - 2 56 35 -0.30 50 0 0 - 3 2 56 13 19 24.8 65 229 16 - 3 8 17 - 2 57 35 - 3 10 4 - 2 55 47 -0.30 51 0 0 - 3 1 46 13 19 27.9 64 231 15 - 3 7 7 - 2 56 24 - 3 8 54 - 2 54 37 -0.30 52 0 0 - 3 0 12 13 19 30.9 63 232 14 - 3 5 34 - 2 54 51 - 3 7 21 - 2 53 4 -0.30 53 0 0 - 2 58 17 13 19 33.9 63 233 13 - 3 3 38 - 2 52 55 - 3 5 25 - 2 51 8 -0.30 54 0 0 - 2 55 58 13 19 36.9 62 234 12 - 3 1 20 - 2 50 37 - 3 3 7 - 2 48 49 -0.30 55 0 0 - 2 53 18 13 19 39.9 61 235 11 - 2 58 39 - 2 47 56 - 3 0 26 - 2 46 9 -0.30 56 0 0 - 2 50 14 13 19 42.9 60 236 10 - 2 55 36 - 2 44 52 - 2 57 23 - 2 43 5 -0.30 57 0 0 - 2 46 48 13 19 45.8 59 237 9 - 2 52 10 - 2 41 27 - 2 53 58 - 2 39 39 -0.30 58 0 0 - 2 43 0 13 19 48.7 58 237 8 - 2 48 22 - 2 37 38 - 2 50 9 - 2 35 51 -0.30 59 0 0 - 2 38 50 13 19 51.6 57 238 7 - 2 44 12 - 2 33 28 - 2 45 59 - 2 31 40 -0.30 60 0 0 - 2 34 17 13 19 54.4 57 239 6 - 2 39 39 - 2 28 55 - 2 41 26 - 2 27 7 -0.30 61 0 0 - 2 29 22 13 19 57.2 56 239 5 - 2 34 44 - 2 23 59 - 2 36 32 - 2 22 12 -0.30 62 0 0 - 2 24 5 13 20 0.0 55 240 4 - 2 29 27 - 2 18 42 - 2 31 15 - 2 16 54 -0.30 63 0 0 - 2 18 25 13 20 2.8 54 241 3 - 2 23 48 - 2 13 2 - 2 25 35 - 2 11 15 -0.30 64 0 0 - 2 12 24 13 20 5.5 53 241 2 - 2 17 47 - 2 7 1 - 2 19 34 - 2 5 13 -0.30 65 0 0 - 2 6 0 13 20 8.2 52 242 1 - 2 11 23 - 2 0 37 - 2 13 11 - 1 58 49 -0.30 66 0 0 - 1 59 15 13 20 10.9 51 242 0 - 2 4 38 - 1 53 52 - 2 6 26 - 1 52 4 -0.30 67 0 0 - 1 52 8 13 20 13.5 50 242 -1 - 1 57 32 - 1 46 45 - 1 59 20 - 1 44 57 -0.30 68 0 0 - 1 44 40 13 20 16.1 49 243 -2 - 1 50 3 - 1 39 16 - 1 51 51 - 1 37 28 -0.30 69 0 0 - 1 36 49 13 20 18.7 48 243 -3 - 1 42 13 - 1 31 25 - 1 44 1 - 1 29 37 -0.30 70 0 0 - 1 28 38 13 20 21.2 47 244 -4 - 1 34 2 - 1 23 13 - 1 35 50 - 1 21 25 -0.30 71 0 0 - 1 20 5 13 20 23.7 46 244 -5 - 1 25 29 - 1 14 40 - 1 27 17 - 1 12 52 -0.30 72 0 0 - 1 11 10 13 20 26.1 45 244 -6 - 1 16 35 - 1 5 46 - 1 18 23 - 1 3 57 -0.30 73 0 0 - 1 1 55 13 20 28.5 44 244 -7 - 1 7 20 - 0 56 30 - 1 9 9 - 0 54 42 -0.30 74 0 0 - 0 52 19 13 20 30.9 43 245 -8 - 0 57 44 - 0 46 53 - 0 59 33 - 0 45 5 -0.30 75 0 0 - 0 42 22 13 20 33.2 42 245 -9 - 0 47 47 - 0 36 56 - 0 49 36 - 0 35 7 -0.30 76 0 0 - 0 32 4 13 20 35.5 41 245 -10 - 0 37 30 - 0 26 38 - 0 39 19 - 0 24 49 -0.30 77 0 0 - 0 21 26 13 20 37.8 40 245 -11 - 0 26 52 - 0 16 0 - 0 28 41 - 0 14 11 -0.30 78 0 0 - 0 10 27 13 20 40.0 39 246 -12 - 0 15 54 - 0 5 1 - 0 17 43 - 0 3 12 -0.30 79 0 0 0 0 51 13 20 42.1 38 246 -13 - 0 4 35 0 6 18 - 0 6 24 0 8 8 -0.30 80 0 0 0 12 30 13 20 44.2 37 246 -14 0 7 3 0 17 58 0 5 14 0 19 47 -0.30 81 0 0 0 24 29 13 20 46.3 36 246 -15 0 19 1 0 29 56 0 17 12 0 31 46 -0.30 82 0 0 0 36 47 13 20 48.3 35 246 -16 0 31 19 0 42 15 0 29 30 0 44 4 -0.30 83 0 0 0 49 24 13 20 50.3 34 246 -17 0 43 56 0 54 53 0 42 7 0 56 42 -0.30 84 0 0 1 2 21 13 20 52.2 33 247 -18 0 56 53 1 7 50 0 55 3 1 9 40 -0.30 85 0 0 1 15 37 13 20 54.1 32 247 -19 1 10 8 1 21 6 1 8 18 1 22 56 -0.30 86 0 0 1 29 11 13 20 55.9 31 247 -20 1 23 42 1 34 41 1 21 52 1 36 31 -0.30 87 0 0 1 43 4 13 20 57.7 30 247 -21 1 37 35 1 48 34 1 35 45 1 50 24 -0.30 88 0 0 1 57 16 13 20 59.4 29 247 -22 1 51 46 2 2 46 1 49 56 2 4 36 -0.30 89 0 0 2 11 45 13 21 1.0 28 247 -23 2 6 15 2 17 16 2 4 25 2 19 6 -0.30 90 0 0 2 26 32 13 21 2.7 27 247 -24 2 21 1 2 32 3 2 19 11 2 33 53 -0.30 91 0 0 2 41 37 13 21 4.2 26 248 -25 2 36 6 2 47 8 2 34 15 2 48 58 -0.30 92 0 0 2 56 59 13 21 5.7 25 248 -26 2 51 27 3 2 30 2 49 37 3 4 21 -0.30 93 0 0 3 12 37 13 21 7.2 24 248 -27 3 7 6 3 18 9 3 5 15 3 20 0 -0.30 94 0 0 3 28 33 13 21 8.6 23 248 -28 3 23 1 3 34 5 3 21 10 3 35 56 -0.30 95 0 0 3 44 45 13 21 9.9 22 248 -29 3 39 12 3 50 17 3 37 21 3 52 8 -0.30 96 0 0 4 1 12 13 21 11.2 21 248 -30 3 55 39 4 6 45 3 53 48 4 8 36 -0.30 97 0 0 4 17 56 13 21 12.4 20 248 -31 4 12 22 4 23 29 4 10 31 4 25 20 -0.30 98 0 0 4 34 55 13 21 13.6 19 248 -32 4 29 21 4 40 28 4 27 30 4 42 20 -0.30 99 0 0 4 52 8 13 21 14.7 18 248 -33 4 46 34 4 57 43 4 44 43 4 59 34 -0.30 100 0 0 5 9 37 13 21 15.7 17 249 -34 5 4 3 5 15 12 5 2 11 5 17 3 -0.30 101 0 0 5 27 20 13 21 16.7 16 249 -36 5 21 45 5 32 55 5 19 53 5 34 47 -0.30 102 0 0 5 45 17 13 21 17.6 15 249 -37 5 39 42 5 50 52 5 37 50 5 52 44 -0.30 103 0 0 6 3 27 13 21 18.5 14 249 -38 5 57 52 6 9 3 5 56 0 6 10 55 -0.30 104 0 0 6 21 51 13 21 19.3 13 249 -39 6 16 15 6 27 27 6 14 23 6 29 19 -0.30 105 0 0 6 40 27 13 21 20.0 12 249 -40 6 34 51 6 46 3 6 32 59 6 47 56 -0.30 106 0 0 6 59 16 13 21 20.7 11 249 -41 6 53 39 7 4 53 6 51 47 7 6 45 -0.30 107 0 0 7 18 17 13 21 21.3 10 249 -42 7 12 40 7 23 54 7 10 48 7 25 46 -0.30 108 0 0 7 37 29 13 21 21.9 9 250 -43 7 31 52 7 43 6 7 29 59 7 44 59 -0.30 109 0 0 7 56 53 13 21 22.3 8 250 -44 7 51 15 8 2 30 7 49 22 8 4 23 -0.30 110 0 0 8 16 27 13 21 22.8 6 250 -45 8 10 49 8 22 5 8 8 56 8 23 57 -0.30 111 0 0 8 36 11 13 21 23.1 5 250 -46 8 30 33 8 41 49 8 28 40 8 43 42 -0.30 112 0 0 8 56 5 13 21 23.4 4 250 -47 8 50 27 9 1 44 8 48 34 9 3 37 -0.30 113 0 0 9 16 9 13 21 23.7 3 250 -48 9 10 31 9 21 48 9 8 38 9 23 41 -0.30 114 0 0 9 36 22 13 21 23.8 2 251 -49 9 30 43 9 42 1 9 28 50 9 43 54 -0.31 115 0 0 9 56 43 13 21 23.9 1 251 -50 9 51 4 10 2 22 9 49 11 10 4 16 -0.32 116 0 0 10 17 12 13 21 24.0 0 251 -51 10 11 32 10 22 52 10 9 39 10 24 45 -0.43 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 357-130382 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 16 06.3567 DE: -18 47 10.032 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 16 06.3567 DE: -18 47 10.032 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.1 * B mag [mag]: 12.0 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2690) Ristiina asteroid class: approx. diameter [km]: 19 approx. diameter ["]: 0.007 distance from Earth [AU]: 3.64410 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#55 date of fit: 2023 Apr 24 source of used astrometry: MPC, JPL number of used observations: 0 number of rejected observations: 0 time covered by the observations: 1800 Jan 01 - 1800 Jan 01 1 sigma uncertainty ellipse (major, minor, PA): 0.011", 0.001", 96.451° remarks: * orbital elements for (2690)Ristiina : Mean anomaly = 260.6098209530 deg Arg. of pericenter = 263.5448668540 deg Long. of node = 135.8682797505 deg Inclination = 11.4484181172 deg Eccentricity = 0.1114814202 Semimajor axis = 3.0370067601 AU Perihelion dist = 2.6984369332 AU Mag: H = 11.44, G = 0.15 Epoch of elements : MJD 60618.55448437 TDT (2024 Nov 04.5545) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#552023Apr24,0.55,2024,11,4,13.307631,0.027313,0.283230,19.469031,-1.927710,0.004643,0.000443,-0.000001,0.000000 30.4948,-18.7782,-23.72,-15.63,False UCAC4 357-130382,18.26843247,-18.7861199,11.96,11.07,10.59,0.1,0,,18.29247008,-18.7782476,6.47,6.50,0,0,0 2690,Ristiina,17.54,18.922,3.6441,0,0,3.309,-4.65,,1.6,0 0,260.5066,2024,11,4,263.5449,135.8683,11.4484,0.11148,3.03701,2.69844,11.44,5.0,0.15 1.167,0.0113,0.0012,96,0.0012,Known errors,0.91,0,-1,-1 20241104_130382,60140.68 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:20 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org