IOTA/IOTA-ES occultation update for (261) Prymno / TYC 6890-01778-1 event on 2024 Oct 30, 12:59 UT Visible from Summary ------- On 2024 Oct 30 UT, the 49.651 km diameter asteroid (261) Prymno will occult a 11.2 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 3.46 mag to 14.60 mag (the magnitude of the asteroid) for at most 2.080 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: 100 * date and approx. time of event: 2024 Oct 30, 12:55 - 2024 Oct 30, 13:04 * geocentric midpoint of event [JD]: 2460614.04149534 * magnitude of target star: 11.19 * magnitude drop [mag]: 3.46 * estimated maximum duration [s]: 2.080 * Moon: 4 % sunlit, 99° distance * Sun: 77° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 50 * 1 sigma uncertainty interval [path widths]: +/- 0.05 * 1 sigma uncertainty interval [seconds]: +/- 0.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.012, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.012", 0.001", 84°) * approx speed of asteroid's shadow [km/s]: 23.9278 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6890-01778-1 by 261 Prymno on 2024 Oct 30 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 - 29 0 0 - 8 1 28 12 55 18.8 0 114 78 - 8 16 11 - 7 46 46 - 8 17 44 - 7 45 12 .... - 28 0 0 - 8 27 32 12 55 18.9 1 114 79 - 8 42 13 - 8 12 50 - 8 43 46 - 8 11 17 0.08 - 27 0 0 - 8 53 20 12 55 19.1 3 113 80 - 9 8 0 - 8 38 40 - 9 9 34 - 8 37 7 0.03 - 26 0 0 - 9 18 53 12 55 19.4 4 113 81 - 9 33 32 - 9 4 14 - 9 35 5 - 9 2 41 0.01 - 25 0 0 - 9 44 10 12 55 19.7 5 113 82 - 9 58 48 - 9 29 33 -10 0 21 - 9 28 0 0.00 - 24 0 0 -10 9 11 12 55 20.2 6 113 83 -10 23 47 - 9 54 35 -10 25 20 - 9 53 2 0.00 - 23 0 0 -10 33 54 12 55 20.7 7 113 84 -10 48 29 -10 19 19 -10 50 2 -10 17 47 -0.01 - 22 0 0 -10 58 20 12 55 21.4 8 112 85 -11 12 54 -10 43 47 -11 14 26 -10 42 14 -0.01 - 21 0 0 -11 22 28 12 55 22.1 9 112 86 -11 37 0 -11 7 56 -11 38 32 -11 6 23 -0.01 - 20 0 0 -11 46 17 12 55 22.9 10 112 87 -12 0 48 -11 31 47 -12 2 20 -11 30 14 -0.01 - 19 0 0 -12 9 48 12 55 23.8 11 112 88 -12 24 17 -11 55 19 -12 25 49 -11 53 46 -0.02 - 18 0 0 -12 32 59 12 55 24.8 12 112 88 -12 47 26 -12 18 31 -12 48 58 -12 16 59 -0.02 - 17 0 0 -12 55 50 12 55 25.8 13 111 88 -13 10 16 -12 41 24 -13 11 48 -12 39 52 -0.02 - 16 0 0 -13 18 21 12 55 27.0 14 111 88 -13 32 46 -13 3 56 -13 34 17 -13 2 25 -0.02 - 15 0 0 -13 40 32 12 55 28.2 15 111 87 -13 54 55 -13 26 8 -13 56 26 -13 24 37 -0.02 - 14 0 0 -14 2 21 12 55 29.6 16 111 86 -14 16 43 -13 48 0 -14 18 14 -13 46 28 -0.02 - 13 0 0 -14 23 50 12 55 31.0 17 111 85 -14 38 10 -14 9 30 -14 39 41 -14 7 58 -0.02 - 12 0 0 -14 44 57 12 55 32.4 18 110 84 -14 59 15 -14 30 38 -15 0 46 -14 29 7 -0.02 - 11 0 0 -15 5 41 12 55 34.0 19 110 83 -15 19 58 -14 51 25 -15 21 29 -14 49 54 -0.02 - 10 0 0 -15 26 4 12 55 35.6 20 110 82 -15 40 19 -15 11 49 -15 41 50 -15 10 18 -0.02 - 9 0 0 -15 46 5 12 55 37.3 21 110 81 -16 0 18 -15 31 51 -16 1 49 -15 30 20 -0.02 - 8 0 0 -16 5 42 12 55 39.1 22 109 80 -16 19 54 -15 51 30 -16 21 25 -15 50 0 -0.03 - 7 0 0 -16 24 57 12 55 41.0 23 109 79 -16 39 8 -16 10 46 -16 40 38 -16 9 16 -0.03 - 6 0 0 -16 43 49 12 55 42.9 24 109 78 -16 57 58 -16 29 40 -16 59 28 -16 28 10 -0.03 - 5 0 0 -17 2 17 12 55 44.9 25 108 77 -17 16 24 -16 48 9 -17 17 54 -16 46 39 -0.03 - 4 0 0 -17 20 21 12 55 46.9 27 108 76 -17 34 27 -17 6 15 -17 35 57 -17 4 46 -0.03 - 3 0 0 -17 38 2 12 55 49.1 28 108 75 -17 52 6 -17 23 58 -17 53 36 -17 22 28 -0.03 - 2 0 0 -17 55 19 12 55 51.3 29 108 74 -18 9 22 -17 41 16 -18 10 51 -17 39 47 -0.03 - 1 0 0 -18 12 12 12 55 53.5 30 107 73 -18 26 13 -17 58 10 -18 27 42 -17 56 41 -0.03 0 0 0 -18 28 40 12 55 55.9 31 107 72 -18 42 40 -18 14 40 -18 44 9 -18 13 11 -0.03 1 0 0 -18 44 44 12 55 58.2 32 107 71 -18 58 42 -18 30 45 -19 0 11 -18 29 17 -0.03 2 0 0 -19 0 23 12 56 0.7 32 106 70 -19 14 20 -18 46 26 -19 15 49 -18 44 57 -0.03 3 0 0 -19 15 38 12 56 3.2 33 106 69 -19 29 33 -19 1 42 -19 31 2 -19 0 14 -0.03 4 0 0 -19 30 28 12 56 5.8 34 106 68 -19 44 21 -19 16 34 -19 45 50 -19 15 5 -0.03 5 0 0 -19 44 52 12 56 8.4 35 105 67 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41 25 -21 10 25 -20 39 58 -0.04 67 0 0 -20 42 57 13 0 5.1 85 232 8 -20 56 44 -20 29 10 -20 58 12 -20 27 42 -0.04 68 0 0 -20 30 16 13 0 9.7 84 236 7 -20 44 5 -20 16 28 -20 45 33 -20 15 0 -0.04 69 0 0 -20 17 10 13 0 14.2 83 239 6 -20 31 0 -20 3 21 -20 32 28 -20 1 53 -0.04 70 0 0 -20 3 38 13 0 18.7 82 241 6 -20 17 30 -19 49 47 -20 18 58 -19 48 19 -0.04 71 0 0 -19 49 41 13 0 23.3 81 242 5 -20 3 33 -19 35 48 -20 5 2 -19 34 20 -0.04 72 0 0 -19 35 18 13 0 27.8 80 243 4 -19 49 11 -19 21 23 -19 50 40 -19 19 55 -0.04 73 0 0 -19 20 29 13 0 32.4 79 244 3 -19 34 24 -19 6 33 -19 35 53 -19 5 5 -0.04 74 0 0 -19 5 14 13 0 36.9 79 245 2 -19 19 11 -18 51 17 -19 20 40 -18 49 49 -0.04 75 0 0 -18 49 35 13 0 41.5 78 245 1 -19 3 33 -18 35 36 -19 5 2 -18 34 7 -0.03 76 0 0 -18 33 30 13 0 46.0 77 246 0 -18 47 30 -18 19 30 -18 48 59 -18 18 1 -0.03 77 0 0 -18 17 0 13 0 50.6 76 246 -1 -18 31 1 -18 2 58 -18 32 30 -18 1 29 -0.03 78 0 0 -18 0 4 13 0 55.1 75 246 -2 -18 14 8 -17 46 1 -18 15 37 -17 44 32 -0.03 79 0 0 -17 42 44 13 0 59.6 74 246 -3 -17 56 49 -17 28 40 -17 58 19 -17 27 10 -0.03 80 0 0 -17 25 0 13 1 4.2 73 246 -4 -17 39 6 -17 10 53 -17 40 36 -17 9 24 -0.03 81 0 0 -17 6 50 13 1 8.7 72 246 -6 -17 20 58 -16 52 42 -17 22 28 -16 51 12 -0.03 82 0 0 -16 48 16 13 1 13.2 71 246 -7 -17 2 26 -16 34 7 -17 3 56 -16 32 37 -0.03 83 0 0 -16 29 19 13 1 17.7 70 246 -8 -16 43 30 -16 15 7 -16 45 0 -16 13 37 -0.03 84 0 0 -16 9 57 13 1 22.2 69 246 -9 -16 24 9 -15 55 44 -16 25 40 -15 54 13 -0.03 85 0 0 -15 50 11 13 1 26.6 67 246 -10 -16 4 25 -15 35 56 -16 5 56 -15 34 26 -0.03 86 0 0 -15 30 1 13 1 31.1 66 246 -11 -15 44 17 -15 15 45 -15 45 48 -15 14 15 -0.03 87 0 0 -15 9 29 13 1 35.5 65 246 -12 -15 23 47 -14 55 11 -15 25 17 -14 53 40 -0.03 88 0 0 -14 48 33 13 1 39.9 64 246 -13 -15 2 53 -14 34 14 -15 4 24 -14 32 43 -0.03 89 0 0 -14 27 15 13 1 44.3 63 246 -14 -14 41 36 -14 12 54 -14 43 7 -14 11 23 -0.03 90 0 0 -14 5 34 13 1 48.6 62 246 -15 -14 19 57 -13 51 11 -14 21 28 -13 49 40 -0.03 91 0 0 -13 43 31 13 1 52.9 61 246 -16 -13 57 55 -13 29 7 -13 59 27 -13 27 35 -0.03 92 0 0 -13 21 7 13 1 57.2 60 246 -17 -13 35 32 -13 6 41 -13 37 4 -13 5 9 -0.03 93 0 0 -12 58 21 13 2 1.5 59 246 -18 -13 12 48 -12 43 53 -13 14 20 -12 42 21 -0.03 94 0 0 -12 35 13 13 2 5.7 58 245 -19 -12 49 42 -12 20 44 -12 51 15 -12 19 12 -0.03 95 0 0 -12 11 46 13 2 9.9 57 245 -20 -12 26 16 -11 57 15 -12 27 49 -11 55 43 -0.03 96 0 0 -11 47 58 13 2 14.1 56 245 -21 -12 2 30 -11 33 25 -12 4 2 -11 31 53 -0.03 97 0 0 -11 23 50 13 2 18.2 55 245 -22 -11 38 24 -11 9 16 -11 39 56 -11 7 44 -0.03 98 0 0 -10 59 23 13 2 22.3 54 245 -23 -11 13 58 -10 44 48 -11 15 31 -10 43 15 -0.03 99 0 0 -10 34 37 13 2 26.3 53 245 -24 -10 49 14 -10 20 0 -10 50 47 -10 18 27 -0.03 100 0 0 -10 9 33 13 2 30.3 52 245 -26 -10 24 11 - 9 54 55 -10 25 44 - 9 53 21 -0.03 101 0 0 - 9 44 11 13 2 34.2 51 245 -27 - 9 58 50 - 9 29 31 -10 0 23 - 9 27 58 -0.03 102 0 0 - 9 18 31 13 2 38.1 49 245 -28 - 9 33 12 - 9 3 50 - 9 34 45 - 9 2 17 -0.03 103 0 0 - 8 52 35 13 2 41.9 48 244 -29 - 9 7 17 - 8 37 53 - 9 8 51 - 8 36 19 -0.03 104 0 0 - 8 26 22 13 2 45.7 47 244 -30 - 8 41 6 - 8 11 39 - 8 42 40 - 8 10 5 -0.03 105 0 0 - 7 59 54 13 2 49.4 46 244 -31 - 8 14 39 - 7 45 9 - 8 16 13 - 7 43 36 -0.03 106 0 0 - 7 33 11 13 2 53.1 45 244 -32 - 7 47 57 - 7 18 25 - 7 49 31 - 7 16 51 -0.03 107 0 0 - 7 6 14 13 2 56.7 44 244 -33 - 7 21 1 - 6 51 27 - 7 22 35 - 6 49 53 -0.03 108 0 0 - 6 39 3 13 3 0.2 43 244 -34 - 6 53 51 - 6 24 14 - 6 55 25 - 6 22 40 -0.03 109 0 0 - 6 11 38 13 3 3.7 42 244 -35 - 6 26 28 - 5 56 49 - 6 28 2 - 5 55 15 -0.03 110 0 0 - 5 44 2 13 3 7.1 41 244 -36 - 5 58 52 - 5 29 11 - 6 0 26 - 5 27 37 -0.03 111 0 0 - 5 16 13 13 3 10.4 40 244 -38 - 5 31 5 - 5 1 22 - 5 32 39 - 4 59 48 -0.03 112 0 0 - 4 48 14 13 3 13.7 38 244 -39 - 5 3 6 - 4 33 22 - 5 4 41 - 4 31 47 -0.03 113 0 0 - 4 20 4 13 3 16.9 37 244 -40 - 4 34 57 - 4 5 11 - 4 36 32 - 4 3 37 -0.03 114 0 0 - 3 51 45 13 3 20.0 36 244 -41 - 4 6 39 - 3 36 51 - 4 8 14 - 3 35 17 -0.03 115 0 0 - 3 23 17 13 3 23.0 35 243 -42 - 3 38 12 - 3 8 23 - 3 39 46 - 3 6 48 -0.03 116 0 0 - 2 54 41 13 3 25.9 34 243 -43 - 3 9 36 - 2 39 46 - 3 11 11 - 2 38 11 -0.03 117 0 0 - 2 25 58 13 3 28.8 33 243 -44 - 2 40 53 - 2 11 2 - 2 42 28 - 2 9 27 -0.03 118 0 0 - 1 57 8 13 3 31.6 32 243 -45 - 2 12 4 - 1 42 11 - 2 13 39 - 1 40 36 -0.03 119 0 0 - 1 28 12 13 3 34.3 31 243 -47 - 1 43 9 - 1 13 15 - 1 44 44 - 1 11 40 -0.02 120 0 0 - 0 59 12 13 3 36.9 30 243 -48 - 1 14 9 - 0 44 14 - 1 15 44 - 0 42 39 -0.02 121 0 0 - 0 30 7 13 3 39.4 28 243 -49 - 0 45 5 - 0 15 9 - 0 46 40 - 0 13 34 -0.02 122 0 0 - 0 0 59 13 3 41.9 27 243 -50 - 0 15 57 0 13 59 - 0 17 32 0 15 34 -0.02 123 0 0 0 28 12 13 3 44.2 26 243 -51 0 13 14 0 43 10 0 11 38 0 44 45 -0.02 124 0 0 0 57 24 13 3 46.5 25 243 -52 0 42 26 1 12 22 0 40 51 1 13 57 -0.02 125 0 0 1 26 37 13 3 48.6 24 243 -53 1 11 39 1 41 35 1 10 4 1 43 11 -0.02 126 0 0 1 55 50 13 3 50.7 23 243 -54 1 40 52 2 10 49 1 39 17 2 12 24 -0.02 127 0 0 2 25 3 13 3 52.7 22 244 -55 2 10 5 2 40 1 2 8 30 2 41 37 -0.02 128 0 0 2 54 14 13 3 54.5 21 244 -57 2 39 16 3 9 12 2 37 41 3 10 48 -0.02 129 0 0 3 23 23 13 3 56.3 19 244 -58 3 8 25 3 38 21 3 6 50 3 39 56 -0.02 130 0 0 3 52 29 13 3 58.0 18 244 -59 3 37 31 4 7 27 3 35 56 4 9 2 -0.02 131 0 0 4 21 31 13 3 59.6 17 244 -60 4 6 34 4 36 28 4 4 59 4 38 4 -0.02 132 0 0 4 50 28 13 4 1.1 16 244 -61 4 35 31 5 5 25 4 33 56 5 7 0 -0.02 133 0 0 5 19 20 13 4 2.5 15 244 -62 5 4 24 5 34 17 5 2 49 5 35 52 -0.02 134 0 0 5 48 6 13 4 3.7 14 244 -63 5 33 10 6 3 2 5 31 35 6 4 37 -0.02 135 0 0 6 16 45 13 4 4.9 13 244 -64 6 1 49 6 31 40 6 0 15 6 33 15 -0.02 136 0 0 6 45 16 13 4 6.0 12 244 -65 6 30 21 7 0 11 6 28 46 7 1 46 -0.02 137 0 0 7 13 39 13 4 7.0 11 244 -67 6 58 45 7 28 33 6 57 10 7 30 8 -0.02 138 0 0 7 41 53 13 4 7.9 10 245 -68 7 26 59 7 56 46 7 25 24 7 58 21 -0.01 139 0 0 8 9 56 13 4 8.7 8 245 -69 7 55 4 8 24 49 7 53 29 8 26 24 -0.01 140 0 0 8 37 50 13 4 9.4 7 245 -70 8 22 58 8 52 42 8 21 24 8 54 16 -0.01 141 0 0 9 5 32 13 4 10.0 6 245 -71 8 50 41 9 20 23 8 49 7 9 21 57 -0.01 142 0 0 9 33 3 13 4 10.5 5 245 -72 9 18 13 9 47 53 9 16 39 9 49 27 0.00 143 0 0 10 0 21 13 4 10.9 4 245 -73 9 45 32 10 15 10 9 43 58 10 16 44 0.00 144 0 0 10 27 26 13 4 11.2 3 245 -74 10 12 38 10 42 14 10 11 4 10 43 48 0.02 145 0 0 10 54 17 13 4 11.4 2 246 -75 10 39 31 11 9 4 10 37 57 11 10 38 0.04 146 0 0 11 20 54 13 4 11.5 1 246 -76 11 6 9 11 35 40 11 4 35 11 37 14 0.13 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 6890-01778-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 47 33.3210 DE: -23 31 19.815 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 47 33.3209 DE: -23 31 19.815 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.2 * B mag [mag]: 11.5 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (261) Prymno asteroid class: approx. diameter [km]: 50 approx. diameter ["]: 0.027 distance from Earth [AU]: 2.54110 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#129 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): 0.012", 0.001", 84.37° remarks: * orbital elements for (261)Prymno : Mean anomaly = 149.1580600662 deg Arg. of pericenter = 66.6786209631 deg Long. of node = 96.5779677499 deg Inclination = 3.6339774921 deg Eccentricity = 0.0902084829 Semimajor axis = 2.3312579433 AU Perihelion dist = 2.1209587010 AU Mag: H = 9.49, G = 0.19 Epoch of elements : MJD 60613.54149505 TDT (2024 Oct 30.5415) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1292023Apr24,2.08,2024,10,30,12.995888,-0.006660,0.035383,13.274852,2.485387,0.005539,0.000975,0.000000,0.000000 62.9836,-23.4622,-19.03,-14.05,False TYC 6890-01778-1,19.79258921,-23.5221707,11.45,11.19,11.05,0.0,0,,19.81724690,-23.4621751,3.46,3.16,0,0,0 261,Prymno,14.60,49.651,2.5411,0,0,3.339,8.61,,2.4,0 0,149.0081,2024,10,30,66.6786,96.5780,3.6340,0.09021,2.33126,2.12096,9.49,5.0,0.15 1.053,0.0120,0.0010,84,0.0014,Known errors,0.85,0,-1,-1 20241030_1778-1,60140.67 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:03 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org