IOTA/IOTA-ES occultation update for (5508) Gomyou / TYC 5815-00079-1 event on 2024 Dec 07, 02:42 UT Visible from Summary ------- On 2024 Dec 07 UT, the 15.3131083366686 km diameter asteroid (5508) Gomyou will occult a 10.1 mag star in the constellation Aquarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 8.10 mag to 18.17 mag (the magnitude of the asteroid) for at most 0.830 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: 98 * date and approx. time of event: 2024 Dec 07, 02:37 - 2024 Dec 07, 02:47 * geocentric midpoint of event [JD]: 2460651.61294921 * magnitude of target star: 10.07 * magnitude drop [mag]: 8.10 * estimated maximum duration [s]: 0.830 * Moon: 33 % sunlit, 13° distance * Sun: 83° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 18 * 1 sigma uncertainty interval [path widths]: +/- 0.36 * 1 sigma uncertainty interval [seconds]: +/- 1.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.009, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.010", 0.003", 61°) * approx speed of asteroid's shadow [km/s]: 18.7311 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5815-00079-1 by 5508 Gomyou on 2024 Dec 7 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 111 0 0 -63 3 12 2 37 53.4 0 118 46 -63 8 51 -62 57 33 -63 13 0 -62 53 24 .... 112 0 0 -63 17 19 2 37 53.5 1 117 46 -63 22 57 -63 11 42 -63 27 5 -63 7 35 0.62 113 0 0 -63 31 0 2 37 53.5 1 116 46 -63 36 36 -63 25 24 -63 40 42 -63 21 18 0.63 114 0 0 -63 44 14 2 37 53.6 2 115 46 -63 49 48 -63 38 40 -63 53 54 -63 34 36 0.64 115 0 0 -63 57 3 2 37 53.8 2 114 46 -64 2 35 -63 51 31 -64 6 39 -63 47 27 0.64 116 0 0 -64 9 26 2 37 53.9 3 113 46 -64 14 57 -64 3 55 -64 19 0 -63 59 53 0.64 117 0 0 -64 21 24 2 37 54.1 3 112 46 -64 26 53 -64 15 55 -64 30 55 -64 11 54 0.64 118 0 0 -64 32 58 2 37 54.3 4 111 46 -64 38 26 -64 27 31 -64 42 27 -64 23 31 0.65 119 0 0 -64 44 8 2 37 54.5 4 110 46 -64 49 34 -64 38 42 -64 53 34 -64 34 43 0.65 120 0 0 -64 54 54 2 37 54.8 5 109 46 -65 0 19 -64 49 30 -65 4 18 -64 45 32 0.65 121 0 0 -65 5 18 2 37 55.0 5 109 46 -65 10 41 -64 59 55 -65 14 38 -64 55 58 0.65 122 0 0 -65 15 18 2 37 55.3 5 108 46 -65 20 40 -65 9 57 -65 24 36 -65 6 1 0.65 123 0 0 -65 24 56 2 37 55.6 6 107 46 -65 30 17 -65 19 36 -65 34 12 -65 15 41 0.65 124 0 0 -65 34 13 2 37 56.0 6 106 46 -65 39 32 -65 28 54 -65 43 26 -65 25 0 0.65 125 0 0 -65 43 7 2 37 56.3 7 105 46 -65 48 25 -65 37 50 -65 52 19 -65 33 57 0.65 126 0 0 -65 51 41 2 37 56.7 7 104 46 -65 56 57 -65 46 24 -66 0 50 -65 42 32 0.65 127 0 0 -65 59 53 2 37 57.1 8 103 46 -66 5 9 -65 54 38 -66 9 0 -65 50 47 0.65 128 0 0 -66 7 45 2 37 57.5 8 102 46 -66 12 59 -66 2 31 -66 16 50 -65 58 41 0.65 129 0 0 -66 15 17 2 37 58.0 9 101 46 -66 20 30 -66 10 4 -66 24 20 -66 6 15 0.65 130 0 0 -66 22 29 2 37 58.4 9 100 46 -66 27 41 -66 17 17 -66 31 30 -66 13 28 0.65 131 0 0 -66 29 21 2 37 58.9 9 99 46 -66 34 32 -66 24 10 -66 38 20 -66 20 22 0.65 132 0 0 -66 35 54 2 37 59.4 10 98 46 -66 41 4 -66 30 44 -66 44 51 -66 26 57 0.65 133 0 0 -66 42 7 2 37 59.9 10 98 46 -66 47 16 -66 36 59 -66 51 4 -66 33 12 0.65 134 0 0 -66 48 2 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- 7 9 37 0.68 - 66 0 0 - 6 51 1 2 46 58.4 21 259 -53 - 6 56 35 - 6 45 28 - 7 0 40 - 6 41 24 0.68 - 65 0 0 - 6 23 30 2 47 1.1 19 259 -54 - 6 29 2 - 6 17 58 - 6 33 6 - 6 13 55 0.68 - 64 0 0 - 5 56 43 2 47 3.6 18 259 -55 - 6 2 14 - 5 51 13 - 6 6 17 - 5 47 11 0.68 - 63 0 0 - 5 30 42 2 47 6.0 17 259 -56 - 5 36 11 - 5 25 14 - 5 40 13 - 5 21 13 0.68 - 62 0 0 - 5 5 27 2 47 8.2 16 259 -57 - 5 10 54 - 5 0 0 - 5 14 55 - 4 56 0 0.69 - 61 0 0 - 4 40 57 2 47 10.3 15 258 -58 - 4 46 22 - 4 35 31 - 4 50 22 - 4 31 33 0.69 - 60 0 0 - 4 17 12 2 47 12.3 14 258 -59 - 4 22 36 - 4 11 48 - 4 26 34 - 4 7 50 0.69 - 59 0 0 - 3 54 13 2 47 14.0 13 258 -60 - 3 59 35 - 3 48 50 - 4 3 33 - 3 44 54 0.69 - 58 0 0 - 3 31 59 2 47 15.7 12 258 -60 - 3 37 20 - 3 26 37 - 3 41 16 - 3 22 42 0.69 - 57 0 0 - 3 10 30 2 47 17.2 11 258 -61 - 3 15 50 - 3 5 10 - 3 19 45 - 3 1 16 0.70 - 56 0 0 - 2 49 47 2 47 18.6 10 258 -62 - 2 55 6 - 2 44 28 - 2 59 0 - 2 40 34 0.70 - 55 0 0 - 2 29 48 2 47 19.8 9 258 -63 - 2 35 6 - 2 24 31 - 2 39 0 - 2 20 38 0.71 - 54 0 0 - 2 10 35 2 47 20.9 8 258 -63 - 2 15 52 - 2 5 19 - 2 19 44 - 2 1 27 0.71 - 53 0 0 - 1 52 7 2 47 21.8 7 258 -64 - 1 57 23 - 1 46 52 - 2 1 14 - 1 43 1 0.72 - 52 0 0 - 1 34 24 2 47 22.6 6 258 -65 - 1 39 38 - 1 29 10 - 1 43 29 - 1 25 20 0.73 - 51 0 0 - 1 17 26 2 47 23.3 5 258 -65 - 1 22 39 - 1 12 13 - 1 26 29 - 1 8 23 0.75 - 50 0 0 - 1 1 12 2 47 23.8 4 258 -66 - 1 6 24 - 0 56 0 - 1 10 13 - 0 52 11 0.77 - 49 0 0 - 0 45 43 2 47 24.2 3 258 -66 - 0 50 54 - 0 40 32 - 0 54 42 - 0 36 44 0.82 - 48 0 0 - 0 30 58 2 47 24.5 2 258 -67 - 0 36 8 - 0 25 48 - 0 39 56 - 0 22 1 0.92 - 47 0 0 - 0 16 57 2 47 24.6 1 258 -67 - 0 22 7 - 0 11 48 - 0 25 54 - 0 8 2 1.40 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 5815-00079-1 * constellation : Aquarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 22 45 38.2427 DE: -12 29 36.213 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 22 45 38.2425 DE: -12 29 36.215 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.1 * B mag [mag]: 10.5 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (5508) Gomyou asteroid class: approx. diameter [km]: 15 approx. diameter ["]: 0.007 distance from Earth [AU]: 2.86640 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#48 date of fit: 2023 Apr 25 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): 0.010", 0.003", 61.114° remarks: * orbital elements for (5508)Gomyou : Mean anomaly = 276.2390047412 deg Arg. of pericenter = 70.7530158305 deg Long. of node = 36.1237429594 deg Inclination = 6.7685011233 deg Eccentricity = 0.2247655582 Semimajor axis = 2.8422301714 AU Perihelion dist = 2.2033947204 AU Mag: H = 12.57, G = 0.15 Epoch of elements : MJD 60651.11294912 TDT (2024 Dec 07.1129) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#482023Apr25,0.83,2024,12,7,2.710781,0.293344,-0.455881,8.900208,5.706173,0.005510,0.002195,0.000000,0.000000 -135.2930,-12.3633,137.21,-22.65,False TYC 5815-00079-1,22.76062301,-12.4933924,10.47,10.07,9.85,0.1,0,,22.78253742,-12.3632853,8.10,7.86,0,0,0 5508,Gomyou,18.17,15.521,2.8664,0,0,1.864,17.51,,1.0,0 0,276.2158,2024,12,7,70.7530,36.1237,6.7685,0.22477,2.84223,2.20339,12.57,5.0,0.15 1.367,0.0103,0.0026,61,0.0027,Known errors,1.02,0,-1,-1 20241207_0079-1,60140.73 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:30 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org