IOTA/IOTA-ES occultation update for (10005) Chernega / TYC 1918-02148-1 event on 2024 Feb 12, 08:21 UT Visible from Summary ------- On 2024 Feb 12 UT, the 9.241 km diameter asteroid (10005) Chernega will occult a 10.9 mag star in the constellation Gemini for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.52 mag to 18.40 mag (the magnitude of the asteroid) for at most 1.100 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: 91 * date and approx. time of event: 2024 Feb 12, 08:10 - 2024 Feb 12, 08:33 * geocentric midpoint of event [JD]: 2460352.84848063 * magnitude of target star: 10.88 * magnitude drop [mag]: 7.52 * estimated maximum duration [s]: 1.100 * Moon: 9 % sunlit, 112° distance * Sun: 146° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 11 * 1 sigma uncertainty interval [path widths]: +/- 0.50 * 1 sigma uncertainty interval [seconds]: +/- 3.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.020, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.021", 0.002", 98°) * approx speed of asteroid's shadow [km/s]: 8.3705 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1918-02148-1 by 10005 Chernega on 2024 Feb 12 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 127 0 0 -26 52 41 8 32 51.5 0 59 22 -26 49 18 -26 56 4 -26 45 56 -26 59 27 .... 128 0 0 -26 20 55 8 32 51.3 1 59 21 -26 17 32 -26 24 18 -26 14 11 -26 27 40 0.22 129 0 0 -25 49 14 8 32 50.8 2 58 20 -25 45 52 -25 52 37 -25 42 31 -25 55 59 0.38 130 0 0 -25 17 39 8 32 50.0 3 58 19 -25 14 17 -25 21 1 -25 10 56 -25 24 23 0.45 131 0 0 -24 46 11 8 32 48.9 4 58 19 -24 42 49 -24 49 33 -24 39 29 -24 52 54 0.48 132 0 0 -24 14 50 8 32 47.6 6 57 18 -24 11 29 -24 18 12 -24 8 9 -24 21 32 0.50 133 0 0 -23 43 38 8 32 45.9 7 57 17 -23 40 18 -23 46 59 -23 36 58 -23 50 19 0.52 134 0 0 -23 12 36 8 32 44.0 8 56 16 -23 9 16 -23 15 56 -23 5 56 -23 19 16 0.53 135 0 0 -22 41 44 8 32 41.7 9 56 15 -22 38 24 -22 45 4 -22 35 6 -22 48 23 0.54 136 0 0 -22 11 4 8 32 39.2 10 56 14 -22 7 45 -22 14 23 -22 4 26 -22 17 42 0.54 137 0 0 -21 40 36 8 32 36.4 11 55 13 -21 37 17 -21 43 55 -21 33 59 -21 47 13 0.55 138 0 0 -21 10 21 8 32 33.3 12 55 12 -21 7 3 -21 13 39 -21 3 45 -21 16 57 0.55 139 0 0 -20 40 20 8 32 29.9 13 54 11 -20 37 2 -20 43 38 -20 33 45 -20 46 55 0.55 140 0 0 -20 10 34 8 32 26.2 14 54 10 -20 7 16 -20 13 51 -20 4 0 -20 17 8 0.56 141 0 0 -19 41 3 8 32 22.3 15 54 9 -19 37 47 -19 44 20 -19 34 31 -19 47 36 0.56 142 0 0 -19 11 49 8 32 18.1 16 53 8 -19 8 33 -19 15 5 -19 5 18 -19 18 21 0.56 143 0 0 -18 42 52 8 32 13.5 17 53 7 -18 39 36 -18 46 7 -18 36 21 -18 49 23 0.56 144 0 0 -18 14 12 8 32 8.8 18 53 6 -18 10 57 -18 17 27 -18 7 43 -18 20 42 0.57 145 0 0 -17 45 51 8 32 3.7 19 52 5 -17 42 37 -17 49 6 -17 39 23 -17 52 20 0.57 146 0 0 -17 17 49 8 31 58.4 20 52 4 -17 14 35 -17 21 3 -17 11 22 -17 24 17 0.57 147 0 0 -16 50 7 8 31 52.9 21 51 3 -16 46 54 -16 53 21 -16 43 41 -16 56 34 0.57 148 0 0 -16 22 45 8 31 47.0 22 51 2 -16 19 33 -16 25 58 -16 16 21 -16 29 11 0.57 149 0 0 -15 55 44 8 31 41.0 23 51 1 -15 52 32 -15 58 57 -15 49 21 -16 2 8 0.57 150 0 0 -15 29 5 8 31 34.7 24 50 0 -15 25 53 -15 32 17 -15 22 42 -15 35 28 0.57 151 0 0 -15 2 47 8 31 28.1 25 50 -1 -14 59 36 -15 5 59 -14 56 26 -15 9 9 0.57 152 0 0 -14 36 52 8 31 21.3 26 50 -2 -14 33 42 -14 40 3 -14 30 32 -14 43 13 0.57 153 0 0 -14 11 20 8 31 14.3 27 49 -3 -14 8 10 -14 14 30 -14 5 1 -14 17 40 0.57 154 0 0 -13 46 11 8 31 7.0 28 49 -5 -13 43 2 -13 49 21 -13 39 53 -13 52 30 0.57 155 0 0 -13 21 26 8 30 59.5 29 48 -6 -13 18 17 -13 24 35 -13 15 9 -13 27 43 0.57 156 0 0 -12 57 5 8 30 51.8 30 48 -7 -12 53 57 -13 0 14 -12 50 50 -13 3 22 0.57 157 0 0 -12 33 9 8 30 43.9 31 48 -8 -12 30 1 -12 36 17 -12 26 55 -12 39 24 0.57 158 0 0 -12 9 38 8 30 35.8 32 47 -9 -12 6 31 -12 12 45 -12 3 24 -12 15 52 0.57 159 0 0 -11 46 32 8 30 27.4 33 47 -10 -11 43 26 -11 49 39 -11 40 20 -11 52 45 0.57 160 0 0 -11 23 52 8 30 18.9 34 46 -11 -11 20 46 -11 26 58 -11 17 41 -11 30 4 0.57 161 0 0 -11 1 38 8 30 10.2 35 46 -12 -10 58 32 -11 4 44 -10 55 28 -11 7 49 0.57 162 0 0 -10 39 50 8 30 1.3 36 45 -13 -10 36 45 -10 42 55 -10 33 41 -10 46 0 0.57 163 0 0 -10 18 29 8 29 52.2 37 45 -14 -10 15 24 -10 21 33 -10 12 20 -10 24 38 0.57 164 0 0 - 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98 0 0 -14 51 40 8 11 51.8 22 308 -54 -14 48 29 -14 54 52 -14 45 19 -14 58 2 0.59 - 97 0 0 -15 17 54 8 11 45.9 21 308 -53 -15 14 42 -15 21 6 -15 11 31 -15 24 17 0.59 - 96 0 0 -15 44 30 8 11 40.3 20 307 -53 -15 41 17 -15 47 42 -15 38 6 -15 50 54 0.60 - 95 0 0 -16 11 27 8 11 35.0 19 307 -52 -16 8 15 -16 14 40 -16 5 3 -16 17 52 0.60 - 94 0 0 -16 38 46 8 11 29.9 18 307 -51 -16 35 33 -16 42 0 -16 32 21 -16 45 13 0.60 - 93 0 0 -17 6 26 8 11 25.0 17 306 -50 -17 3 12 -17 9 40 -16 59 59 -17 12 54 0.60 - 92 0 0 -17 34 26 8 11 20.5 16 306 -49 -17 31 12 -17 37 41 -17 27 58 -17 40 55 0.60 - 91 0 0 -18 2 46 8 11 16.2 15 306 -48 -17 59 31 -18 6 1 -17 56 16 -18 9 15 0.60 - 90 0 0 -18 31 24 8 11 12.2 14 305 -47 -18 28 8 -18 34 40 -18 24 54 -18 37 55 0.60 - 89 0 0 -19 0 21 8 11 8.4 13 305 -46 -18 57 4 -19 3 37 -18 53 49 -19 6 52 0.60 - 88 0 0 -19 29 35 8 11 5.0 12 304 -45 -19 26 18 -19 32 51 -19 23 2 -19 36 8 0.60 - 87 0 0 -19 59 6 8 11 1.8 11 304 -44 -19 55 48 -20 2 23 -19 52 32 -20 5 40 0.60 - 86 0 0 -20 28 52 8 10 58.9 10 304 -43 -20 25 35 -20 32 10 -20 22 18 -20 35 27 0.61 - 85 0 0 -20 58 54 8 10 56.3 9 303 -42 -20 55 36 -21 2 13 -20 52 19 -21 5 31 0.61 - 84 0 0 -21 29 11 8 10 54.0 8 303 -41 -21 25 52 -21 32 30 -21 22 34 -21 35 48 0.61 - 83 0 0 -21 59 41 8 10 52.0 7 303 -40 -21 56 22 -22 3 1 -21 53 3 -22 6 19 0.61 - 82 0 0 -22 30 24 8 10 50.3 6 302 -39 -22 27 4 -22 33 44 -22 23 45 -22 37 3 0.62 - 81 0 0 -23 1 19 8 10 48.9 5 302 -38 -22 57 58 -23 4 39 -22 54 39 -23 7 59 0.62 - 80 0 0 -23 32 24 8 10 47.7 4 301 -37 -23 29 4 -23 35 45 -23 25 44 -23 39 5 0.63 - 79 0 0 -24 3 40 8 10 46.9 3 301 -36 -24 0 19 -24 7 1 -23 56 59 -24 10 22 0.64 - 78 0 0 -24 35 5 8 10 46.4 1 301 -35 -24 31 43 -24 38 27 -24 28 23 -24 41 48 0.67 - 77 0 0 -25 6 38 8 10 46.1 0 300 -33 -25 3 16 -25 10 0 -24 59 55 -25 13 22 0.86 Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 13.2 Data for the target star ------------------------ * name: TYC 1918-02148-1 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 07 25 56.8412 DE: +27 02 04.368 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 07 25 56.8412 DE: +27 02 04.368 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.300) * V mag [mag]: 10.9 * B mag [mag]: 11.1 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (10005) Chernega asteroid class: approx. diameter [km]: 9 approx. diameter ["]: 0.007 distance from Earth [AU]: 1.76640 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#45 date of fit: 2023 Feb 10 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): 0.021", 0.002", 98.136° remarks: * orbital elements for (10005)Chernega : Mean anomaly = 119.2504809697 deg Arg. of pericenter = 322.3026443770 deg Long. of node = 21.0056005006 deg Inclination = 3.3971363447 deg Eccentricity = 0.2129257109 Semimajor axis = 2.3321979964 AU Perihelion dist = 1.8356130800 AU Mag: H = 14.33, G = 0.15 Epoch of elements : MJD 60352.34848109 TDT (2024 Feb 12.3485) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#452023Feb10,1.10,2024,2,12,8.363535,0.008429,-0.492117,-4.723836,-0.080571,0.003184,-0.000910,0.000001,0.000000 -155.4813,26.9870,58.10,-13.81,False TYC 1918-02148-1,7.43245590,27.0345467,11.14,10.88,10.74,0.0,0,,7.45760497,26.9869866,7.52,7.21,0,0,0 10005,Chernega,18.40,9.241,1.7664,0,0,-1.759,-0.40,,0.8,0 0,119.1540,2024,2,12,322.3026,21.0056,3.3971,0.21293,2.33220,1.83561,14.33,5.0,0.15 1.498,0.0207,0.0015,98,0.0036,Known errors,1.74,0,-1,-1 20240212_2148-1,60138.17 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 13, 04:00 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org