IOTA/IOTA-ES occultation update for (2474) Ruby / UCAC4 551-005767 event on 2024 Jul 08, 09:37 UT Visible from Summary ------- On 2024 Jul 08 UT, the 21.306 km diameter asteroid (2474) Ruby will occult a 11.7 mag star in the constellation Aries for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.31 mag to 17.98 mag (the magnitude of the asteroid) for at most 0.720 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 Jul 08, 09:33 - 2024 Jul 08, 09:40 * geocentric midpoint of event [JD]: 2460499.90098542 * magnitude of target star: 11.67 * magnitude drop [mag]: 6.31 * estimated maximum duration [s]: 0.720 * Moon: 7 % sunlit, 87° distance * Sun: 58° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 22 * 1 sigma uncertainty interval [path widths]: +/- 0.32 * 1 sigma uncertainty interval [seconds]: +/- 0.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.008, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.008", 0.002", 84°) * approx speed of asteroid's shadow [km/s]: 29.7520 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 551-005767 by 2474 Ruby on 2024 Jul 8 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 -101 0 0 -30 32 5 9 34 1.8 1 66 -52 -30 38 43 -30 25 26 -30 43 1 -30 21 9 .... -100 0 0 -30 8 55 9 34 1.9 2 65 -52 -30 15 35 -30 2 17 -30 19 53 -29 57 59 0.14 - 99 0 0 -29 45 28 9 34 2.0 3 65 -51 -29 52 8 -29 38 49 -29 56 26 -29 34 31 0.21 - 98 0 0 -29 21 43 9 34 2.2 4 64 -50 -29 28 24 -29 15 3 -29 32 43 -29 10 45 0.24 - 97 0 0 -28 57 41 9 34 2.5 4 64 -49 -29 4 22 -28 51 1 -29 8 41 -28 46 42 0.26 - 96 0 0 -28 33 22 9 34 2.8 5 63 -48 -28 40 4 -28 26 41 -28 44 23 -28 22 22 0.27 - 95 0 0 -28 8 47 9 34 3.2 6 63 -47 -28 15 29 -28 2 5 -28 19 48 -27 57 45 0.28 - 94 0 0 -27 43 55 9 34 3.6 7 63 -46 -27 50 37 -27 37 13 -27 54 58 -27 32 53 0.28 - 93 0 0 -27 18 48 9 34 4.2 8 62 -45 -27 25 31 -27 12 5 -27 29 51 -27 7 45 0.29 - 92 0 0 -26 53 25 9 34 4.8 9 62 -44 -27 0 9 -26 46 42 -27 4 30 -26 42 22 0.29 - 91 0 0 -26 27 49 9 34 5.4 10 61 -43 -26 34 32 -26 21 5 -26 38 53 -26 16 44 0.30 - 90 0 0 -26 1 57 9 34 6.2 11 61 -42 -26 8 42 -25 55 13 -26 13 3 -25 50 53 0.30 - 89 0 0 -25 35 53 9 34 7.0 12 60 -42 -25 42 37 -25 29 8 -25 46 59 -25 24 47 0.30 - 88 0 0 -25 9 35 9 34 7.9 13 60 -41 -25 16 20 -25 2 50 -25 20 42 -24 58 29 0.30 - 87 0 0 -24 43 5 9 34 8.8 14 59 -40 -24 49 50 -24 36 20 -24 54 12 -24 31 58 0.30 - 86 0 0 -24 16 22 9 34 9.8 15 59 -39 -24 23 8 -24 9 37 -24 27 30 -24 5 15 0.31 - 85 0 0 -23 49 29 9 34 10.9 16 58 -38 -23 56 15 -23 42 43 -24 0 37 -23 38 21 0.31 - 84 0 0 -23 22 25 9 34 12.1 17 58 -37 -23 29 11 -23 15 39 -23 33 33 -23 11 17 0.31 - 83 0 0 -22 55 10 9 34 13.4 18 58 -36 -23 1 57 -22 48 24 -23 6 19 -22 44 2 0.31 - 82 0 0 -22 27 47 9 34 14.7 19 57 -35 -22 34 33 -22 21 0 -22 38 56 -22 16 38 0.31 - 81 0 0 -22 0 14 9 34 16.1 21 57 -34 -22 7 1 -21 53 28 -22 11 24 -21 49 5 0.31 - 80 0 0 -21 32 34 9 34 17.5 22 56 -33 -21 39 21 -21 25 47 -21 43 44 -21 21 25 0.31 - 79 0 0 -21 4 46 9 34 19.1 23 56 -32 -21 11 33 -20 57 59 -21 15 56 -20 53 37 0.31 - 78 0 0 -20 36 52 9 34 20.7 24 55 -31 -20 43 39 -20 30 5 -20 48 2 -20 25 42 0.31 - 77 0 0 -20 8 51 9 34 22.4 25 55 -30 -20 15 38 -20 2 5 -20 20 2 -19 57 42 0.31 - 76 0 0 -19 40 46 9 34 24.2 26 55 -29 -19 47 33 -19 33 59 -19 51 56 -19 29 36 0.31 - 75 0 0 -19 12 36 9 34 26.0 27 54 -27 -19 19 23 -19 5 49 -19 23 46 -19 1 26 0.32 - 74 0 0 -18 44 22 9 34 27.9 28 54 -26 -18 51 9 -18 37 36 -18 55 32 -18 33 13 0.32 - 73 0 0 -18 16 6 9 34 29.9 29 53 -25 -18 22 53 -18 9 19 -18 27 16 -18 4 57 0.32 - 72 0 0 -17 47 47 9 34 32.0 30 53 -24 -17 54 34 -17 41 1 -17 58 57 -17 36 38 0.32 - 71 0 0 -17 19 27 9 34 34.1 31 53 -23 -17 26 14 -17 12 41 -17 30 37 -17 8 19 0.32 - 70 0 0 -16 51 7 9 34 36.3 32 52 -22 -16 57 53 -16 44 21 -17 2 16 -16 39 58 0.32 - 69 0 0 -16 22 47 9 34 38.6 33 52 -21 -16 29 33 -16 16 1 -16 33 56 -16 11 39 0.32 - 68 0 0 -15 54 28 9 34 40.9 34 51 -20 -16 1 14 -15 47 42 -16 5 36 -15 43 20 0.32 - 67 0 0 -15 26 11 9 34 43.4 35 51 -19 -15 32 56 -15 19 25 -15 37 19 -15 15 3 0.32 - 66 0 0 -14 57 56 9 34 45.8 36 50 -18 -15 4 41 -14 51 11 -15 9 4 -14 46 49 0.32 - 65 0 0 -14 29 45 9 34 48.4 37 50 -17 -14 36 30 -14 23 0 -14 40 52 -14 18 39 0.32 - 64 0 0 -14 1 38 9 34 51.0 38 49 -16 -14 8 23 -13 54 53 -14 12 44 -13 50 32 0.32 - 63 0 0 -13 33 36 9 34 53.7 39 49 -15 -13 40 20 -13 26 52 -13 44 42 -13 22 31 0.32 - 62 0 0 -13 5 40 9 34 56.4 40 48 -14 -13 12 24 -12 58 56 -13 16 45 -12 54 36 0.32 - 61 0 0 -12 37 51 9 34 59.3 41 48 -13 -12 44 34 -12 31 7 -12 48 55 -12 26 47 0.32 - 60 0 0 -12 10 9 9 35 2.1 42 47 -11 -12 16 52 -12 3 26 -12 21 12 -11 59 6 0.32 - 59 0 0 -11 42 35 9 35 5.1 44 47 -10 -11 49 17 -11 35 52 -11 53 38 -11 31 32 0.32 - 58 0 0 -11 15 10 9 35 8.0 45 46 -9 -11 21 52 -11 8 28 -11 26 12 -11 4 8 0.32 - 57 0 0 -10 47 54 9 35 11.1 46 46 -8 -10 54 36 -10 41 13 -10 58 56 -10 36 54 0.32 - 56 0 0 -10 20 49 9 35 14.2 47 45 -7 -10 27 31 -10 14 9 -10 31 50 -10 9 50 0.32 - 55 0 0 - 9 53 56 9 35 17.3 48 45 -6 -10 0 36 - 9 47 15 -10 4 55 - 9 42 57 0.32 - 54 0 0 - 9 27 14 9 35 20.6 49 44 -5 - 9 33 54 - 9 20 34 - 9 38 12 - 9 16 16 0.32 - 53 0 0 - 9 0 44 9 35 23.8 50 43 -4 - 9 7 24 - 8 54 5 - 9 11 42 - 8 49 47 0.32 - 52 0 0 - 8 34 28 9 35 27.1 51 43 -3 - 8 41 7 - 8 27 50 - 8 45 25 - 8 23 32 0.32 - 51 0 0 - 8 8 26 9 35 30.5 52 42 -2 - 8 15 4 - 8 1 48 - 8 19 21 - 7 57 31 0.32 - 50 0 0 - 7 42 38 9 35 33.9 53 41 -1 - 7 49 16 - 7 36 1 - 7 53 33 - 7 31 44 0.33 - 49 0 0 - 7 17 6 9 35 37.3 54 41 1 - 7 23 43 - 7 10 29 - 7 27 59 - 7 6 13 0.33 - 48 0 0 - 6 51 49 9 35 40.8 55 40 2 - 6 58 25 - 6 45 13 - 7 2 41 - 6 40 58 0.33 - 47 0 0 - 6 26 49 9 35 44.3 56 39 3 - 6 33 25 - 6 20 14 - 6 37 40 - 6 15 59 0.33 - 46 0 0 - 6 2 6 9 35 47.9 56 38 4 - 6 8 41 - 5 55 32 - 6 12 56 - 5 51 17 0.33 - 45 0 0 - 5 37 41 9 35 51.5 57 37 5 - 5 44 15 - 5 31 7 - 5 48 30 - 5 26 53 0.33 - 44 0 0 - 5 13 34 9 35 55.1 58 36 6 - 5 20 7 - 5 7 1 - 5 24 21 - 5 2 47 0.33 - 43 0 0 - 4 49 45 9 35 58.7 59 35 7 - 4 56 18 - 4 43 13 - 5 0 32 - 4 38 59 0.33 - 42 0 0 - 4 26 16 9 36 2.4 60 34 8 - 4 32 48 - 4 19 45 - 4 37 1 - 4 15 32 0.33 - 41 0 0 - 4 3 7 9 36 6.2 61 33 9 - 4 9 38 - 3 56 36 - 4 13 51 - 3 52 24 0.33 - 40 0 0 - 3 40 18 9 36 9.9 62 31 10 - 3 46 48 - 3 33 48 - 3 51 1 - 3 29 36 0.33 - 39 0 0 - 3 17 50 9 36 13.7 63 30 11 - 3 24 19 - 3 11 20 - 3 28 31 - 3 7 9 0.33 - 38 0 0 - 2 55 43 9 36 17.5 64 28 12 - 3 2 12 - 2 49 14 - 3 6 23 - 2 45 3 0.33 - 37 0 0 - 2 33 58 9 36 21.3 64 27 14 - 2 40 26 - 2 27 30 - 2 44 37 - 2 23 19 0.33 - 36 0 0 - 2 12 34 9 36 25.1 65 25 15 - 2 19 2 - 2 6 7 - 2 23 12 - 2 1 57 0.33 - 35 0 0 - 1 51 34 9 36 29.0 66 24 16 - 1 58 0 - 1 45 7 - 2 2 10 - 1 40 58 0.33 - 34 0 0 - 1 30 56 9 36 32.8 67 22 17 - 1 37 22 - 1 24 30 - 1 41 31 - 1 20 21 0.33 - 33 0 0 - 1 10 41 9 36 36.7 67 20 18 - 1 17 6 - 1 4 16 - 1 21 15 - 1 0 8 0.33 - 32 0 0 - 0 50 50 9 36 40.6 68 18 19 - 0 57 15 - 0 44 26 - 1 1 23 - 0 40 18 0.33 - 31 0 0 - 0 31 23 9 36 44.5 68 15 20 - 0 37 47 - 0 25 0 - 0 41 55 - 0 20 52 0.33 - 30 0 0 - 0 12 21 9 36 48.4 69 13 21 - 0 18 43 - 0 5 58 - 0 22 51 - 0 1 51 0.33 - 29 0 0 0 6 18 9 36 52.3 69 11 22 - 0 0 5 0 12 40 - 0 4 12 0 16 46 0.33 - 28 0 0 0 24 31 9 36 56.2 70 8 23 0 18 9 0 30 52 0 14 3 0 34 58 0.33 - 27 0 0 0 42 19 9 37 0.2 70 5 24 0 35 58 0 48 40 0 31 52 0 52 45 0.33 - 26 0 0 0 59 42 9 37 4.1 71 3 25 0 53 22 1 6 2 0 49 16 1 10 7 0.33 - 25 0 0 1 16 39 9 37 8.0 71 360 26 1 10 20 1 22 58 1 6 15 1 27 3 0.33 - 24 0 0 1 33 10 9 37 11.9 71 357 27 1 26 52 1 39 29 1 22 47 1 43 33 0.33 - 23 0 0 1 49 16 9 37 15.9 71 354 28 1 42 58 1 55 33 1 38 53 1 59 38 0.33 - 22 0 0 2 4 55 9 37 19.8 72 351 29 1 58 37 2 11 12 1 54 33 2 15 15 0.33 - 21 0 0 2 20 7 9 37 23.7 72 347 30 2 13 51 2 26 24 2 9 47 2 30 27 0.33 - 20 0 0 2 34 53 9 37 27.6 72 344 31 2 28 37 2 41 9 2 24 34 2 45 12 0.33 - 19 0 0 2 49 12 9 37 31.5 72 341 32 2 42 57 2 55 27 2 38 54 2 59 30 0.33 - 18 0 0 3 3 4 9 37 35.4 71 338 33 2 56 49 3 9 19 2 52 47 3 13 21 0.33 - 17 0 0 3 16 29 9 37 39.3 71 335 34 3 10 15 3 22 43 3 6 13 3 26 45 0.33 - 16 0 0 3 29 27 9 37 43.1 71 332 35 3 23 13 3 35 40 3 19 12 3 39 42 0.33 - 15 0 0 3 41 57 9 37 47.0 71 330 36 3 35 44 3 48 10 3 31 43 3 52 11 0.33 - 14 0 0 3 54 0 9 37 50.8 70 327 37 3 47 48 4 0 13 3 43 47 4 4 13 0.33 - 13 0 0 4 5 35 9 37 54.7 70 324 38 3 59 23 4 11 47 3 55 23 4 15 47 0.33 - 12 0 0 4 16 43 9 37 58.5 69 322 39 4 10 31 4 22 54 4 6 31 4 26 54 0.33 - 11 0 0 4 27 23 9 38 2.3 69 320 40 4 21 12 4 33 34 4 17 12 4 37 33 0.33 - 10 0 0 4 37 35 9 38 6.0 68 318 41 4 31 24 4 43 45 4 27 24 4 47 44 0.33 - 9 0 0 4 47 19 9 38 9.8 68 316 42 4 41 8 4 53 28 4 37 9 4 57 27 0.33 - 8 0 0 4 56 34 9 38 13.5 67 314 43 4 50 25 5 2 44 4 46 26 5 6 43 0.33 - 7 0 0 5 5 22 9 38 17.2 67 312 44 4 59 13 5 11 31 4 55 14 5 15 30 0.33 - 6 0 0 5 13 42 9 38 20.9 66 310 45 5 7 33 5 19 51 5 3 35 5 23 49 0.33 - 5 0 0 5 21 33 9 38 24.5 65 309 46 5 15 25 5 27 42 5 11 27 5 31 40 0.33 - 4 0 0 5 28 57 9 38 28.2 64 307 47 5 22 48 5 35 4 5 18 50 5 39 2 0.33 - 3 0 0 5 35 51 9 38 31.8 64 306 48 5 29 44 5 41 59 5 25 46 5 45 57 0.33 - 2 0 0 5 42 18 9 38 35.4 63 305 49 5 36 11 5 48 25 5 32 13 5 52 23 0.33 - 1 0 0 5 48 16 9 38 38.9 62 304 50 5 42 9 5 54 23 5 38 12 5 58 20 0.33 0 0 0 5 53 46 9 38 42.4 61 303 51 5 47 39 5 59 53 5 43 42 6 3 50 0.33 1 0 0 5 58 48 9 38 45.9 61 302 52 5 52 41 6 4 54 5 48 44 6 8 51 0.33 2 0 0 6 3 21 9 38 49.4 60 301 53 5 57 14 6 9 27 5 53 17 6 13 24 0.33 3 0 0 6 7 25 9 38 52.8 59 300 54 6 1 19 6 13 31 5 57 22 6 17 28 0.33 4 0 0 6 11 1 9 38 56.2 58 299 55 6 4 55 6 17 7 6 0 59 6 21 4 0.33 5 0 0 6 14 9 9 38 59.6 57 298 56 6 8 3 6 20 15 6 4 7 6 24 11 0.33 6 0 0 6 16 48 9 39 2.9 56 298 56 6 10 43 6 22 54 6 6 46 6 26 50 0.33 7 0 0 6 18 59 9 39 6.2 55 297 57 6 12 54 6 25 5 6 8 57 6 29 1 0.33 8 0 0 6 20 42 9 39 9.4 55 296 58 6 14 36 6 26 47 6 10 40 6 30 43 0.33 9 0 0 6 21 55 9 39 12.6 54 296 59 6 15 50 6 28 1 6 11 54 6 31 57 0.33 10 0 0 6 22 41 9 39 15.8 53 295 60 6 16 35 6 28 46 6 12 39 6 32 42 0.33 11 0 0 6 22 58 9 39 19.0 52 295 61 6 16 52 6 29 3 6 12 56 6 32 59 0.33 12 0 0 6 22 46 9 39 22.1 51 295 61 6 16 41 6 28 52 6 12 45 6 32 48 0.33 13 0 0 6 22 6 9 39 25.1 50 294 62 6 16 1 6 28 12 6 12 5 6 32 8 0.33 14 0 0 6 20 58 9 39 28.1 49 294 63 6 14 53 6 27 4 6 10 56 6 31 0 0.33 15 0 0 6 19 22 9 39 31.1 48 294 64 6 13 16 6 25 27 6 9 19 6 29 23 0.33 16 0 0 6 17 16 9 39 34.1 47 293 65 6 11 11 6 23 22 6 7 14 6 27 18 0.33 17 0 0 6 14 43 9 39 36.9 46 293 65 6 8 37 6 20 49 6 4 41 6 24 45 0.33 18 0 0 6 11 42 9 39 39.8 45 293 66 6 5 36 6 17 47 6 1 39 6 21 44 0.33 19 0 0 6 8 12 9 39 42.6 44 292 67 6 2 5 6 14 17 5 58 9 6 18 14 0.33 20 0 0 6 4 13 9 39 45.3 43 292 67 5 58 7 6 10 20 5 54 10 6 14 16 0.33 21 0 0 5 59 47 9 39 48.1 42 292 68 5 53 41 6 5 53 5 49 44 6 9 50 0.33 22 0 0 5 54 53 9 39 50.7 41 292 68 5 48 46 6 0 59 5 44 49 6 4 56 0.33 23 0 0 5 49 30 9 39 53.3 41 292 69 5 43 23 5 55 37 5 39 26 5 59 34 0.33 24 0 0 5 43 40 9 39 55.9 40 292 69 5 37 32 5 49 47 5 33 35 5 53 44 0.33 25 0 0 5 37 21 9 39 58.4 39 292 70 5 31 13 5 43 28 5 27 16 5 47 25 0.33 26 0 0 5 30 34 9 40 0.9 38 291 70 5 24 27 5 36 42 5 20 29 5 40 39 0.33 27 0 0 5 23 20 9 40 3.3 37 291 71 5 17 12 5 29 28 5 13 14 5 33 25 0.33 28 0 0 5 15 38 9 40 5.6 36 291 71 5 9 29 5 21 46 5 5 31 5 25 44 0.33 29 0 0 5 7 28 9 40 7.9 35 291 71 5 1 19 5 13 36 4 57 20 5 17 34 0.33 30 0 0 4 58 50 9 40 10.2 34 291 72 4 52 41 5 4 59 4 48 42 5 8 57 0.33 31 0 0 4 49 45 9 40 12.4 33 291 72 4 43 35 4 55 54 4 39 36 4 59 53 0.33 32 0 0 4 40 12 9 40 14.5 32 291 72 4 34 2 4 46 22 4 30 3 4 50 21 0.33 33 0 0 4 30 12 9 40 16.6 31 291 72 4 24 1 4 36 22 4 20 2 4 40 21 0.33 34 0 0 4 19 44 9 40 18.6 30 291 72 4 13 33 4 25 55 4 9 33 4 29 55 0.33 35 0 0 4 8 50 9 40 20.6 29 291 72 4 2 38 4 15 1 3 58 38 4 19 1 0.33 36 0 0 3 57 28 9 40 22.5 28 291 72 3 51 16 4 3 39 3 47 15 4 7 40 0.33 37 0 0 3 45 39 9 40 24.3 27 291 71 3 39 27 3 51 51 3 35 26 3 55 52 0.33 38 0 0 3 33 23 9 40 26.1 26 291 71 3 27 10 3 39 36 3 23 9 3 43 37 0.33 39 0 0 3 20 41 9 40 27.8 25 291 71 3 14 28 3 26 54 3 10 26 3 30 56 0.33 40 0 0 3 7 32 9 40 29.5 24 291 70 3 1 18 3 13 46 2 57 16 3 17 48 0.33 41 0 0 2 53 57 9 40 31.1 23 291 70 2 47 42 3 0 11 2 43 40 3 4 13 0.33 42 0 0 2 39 55 9 40 32.6 22 291 69 2 33 40 2 46 10 2 29 37 2 50 13 0.33 43 0 0 2 25 28 9 40 34.1 21 291 69 2 19 12 2 31 43 2 15 9 2 35 46 0.33 44 0 0 2 10 34 9 40 35.5 20 291 68 2 4 18 2 16 50 2 0 14 2 20 53 0.33 45 0 0 1 55 15 9 40 36.8 18 291 68 1 48 58 2 1 32 1 44 54 2 5 35 0.33 46 0 0 1 39 30 9 40 38.0 17 291 67 1 33 13 1 45 48 1 29 8 1 49 51 0.33 47 0 0 1 23 20 9 40 39.2 16 291 66 1 17 2 1 29 38 1 12 57 1 33 42 0.33 48 0 0 1 6 45 9 40 40.4 15 291 66 1 0 26 1 13 4 0 56 21 1 17 8 0.33 49 0 0 0 49 45 9 40 41.4 14 291 65 0 43 25 0 56 5 0 39 20 1 0 10 0.33 50 0 0 0 32 21 9 40 42.4 13 291 64 0 26 0 0 38 41 0 21 54 0 42 46 0.33 51 0 0 0 14 32 9 40 43.3 12 291 64 0 8 11 0 20 53 0 4 4 0 24 59 0.33 52 0 0 - 0 3 41 9 40 44.1 11 291 63 - 0 10 3 0 2 40 - 0 14 10 0 6 47 0.33 53 0 0 - 0 22 18 9 40 44.9 10 291 62 - 0 28 40 - 0 15 55 - 0 32 47 - 0 11 49 0.33 54 0 0 - 0 41 18 9 40 45.6 9 291 61 - 0 47 41 - 0 34 55 - 0 51 49 - 0 30 48 0.33 55 0 0 - 1 0 41 9 40 46.2 8 291 60 - 1 7 5 - 0 54 17 - 1 11 13 - 0 50 10 0.33 56 0 0 - 1 20 27 9 40 46.8 7 291 59 - 1 26 52 - 1 14 3 - 1 31 0 - 1 9 55 0.34 57 0 0 - 1 40 36 9 40 47.2 6 291 58 - 1 47 1 - 1 34 11 - 1 51 10 - 1 30 2 0.34 58 0 0 - 2 1 6 9 40 47.6 5 291 58 - 2 7 32 - 1 54 41 - 2 11 42 - 1 50 31 0.34 59 0 0 - 2 21 59 9 40 48.0 4 290 57 - 2 28 25 - 2 15 32 - 2 32 35 - 2 11 23 0.34 60 0 0 - 2 43 12 9 40 48.2 3 290 56 - 2 49 40 - 2 36 45 - 2 53 50 - 2 32 35 0.35 61 0 0 - 3 4 47 9 40 48.4 2 290 55 - 3 11 15 - 2 58 19 - 3 15 26 - 2 54 9 0.36 62 0 0 - 3 26 42 9 40 48.4 1 290 54 - 3 33 11 - 3 20 14 - 3 37 23 - 3 16 3 0.40 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.2 Data for the target star ------------------------ * name: UCAC4 551-005767 * constellation : Aries * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 03 02 35.4502 DE: +20 09 14.463 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 03 02 35.4503 DE: +20 09 14.463 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 11.7 * B mag [mag]: 12.3 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2474) Ruby asteroid class: approx. diameter [km]: 21 approx. diameter ["]: 0.008 distance from Earth [AU]: 3.49860 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#56 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): 0.008", 0.002", 84.227° remarks: * orbital elements for (2474)Ruby : Mean anomaly = 121.8573042690 deg Arg. of pericenter = 14.5342734469 deg Long. of node = 237.7753482171 deg Inclination = 7.5262249251 deg Eccentricity = 0.2197232434 Semimajor axis = 2.6849379844 AU Perihelion dist = 2.0949947022 AU Mag: H = 11.95, G = 0.15 Epoch of elements : MJD 60499.40098630 TDT (2024 Jul 08.4010) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#562023Apr24,0.72,2024,7,8,9.623650,0.079517,-0.305242,16.257900,4.204926,-0.004622,-0.001179,-0.000001,0.000000 -25.1958,20.2496,36.95,22.39,False UCAC4 551-005767,3.04318058,20.1540172,12.31,11.67,11.32,0.0,0,,3.06624136,20.2496021,6.32,6.21,0,0,0 2474,Ruby,17.98,21.306,3.4986,0,0,2.905,10.57,,1.6,0 0,121.7675,2024,7,8,14.5343,237.7753,7.5262,0.21972,2.68494,2.09499,11.95,5.0,0.15 1.323,0.0083,0.0024,84,0.0027,Known errors,0.97,0,-1,-1 20240708_005767,60140.19 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 04:33 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org