IOTA/IOTA-ES occultation update for (4954) Eric / UCAC4 755-073273 event on 2024 Dec 13, 11:44 UT Visible from Summary ------- On 2024 Dec 13 UT, the 9.613 km diameter asteroid (4954) Eric will occult a 10.0 mag star in the constellation Cepheus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 2.84 mag to 12.77 mag (the magnitude of the asteroid) for at most 1.180 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: 18 * date and approx. time of event: 2024 Dec 13, 11:32 - 2024 Dec 13, 11:55 * geocentric midpoint of event [JD]: 2460657.98889604 * magnitude of target star: 10.01 * magnitude drop [mag]: 2.84 * estimated maximum duration [s]: 1.180 * Moon: 95 % sunlit, 64° distance * Sun: 103° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 11 * 1 sigma uncertainty interval [path widths]: +/- 3.65 * 1 sigma uncertainty interval [seconds]: +/- 4.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.039, +/- 0.174) * 1 sigma uncertainty ellipse (major, minor, PA): (0.175", 0.034", 174°) * approx speed of asteroid's shadow [km/s]: 8.1763 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 755-073273 by 4954 Eric on 2024 Dec 13 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 70 0 0 -27 29 7 11 32 51.8 1 5 32 -27 59 40 -27 0 0 .. .. .. -23 57 22 .... 71 0 0 -20 24 44 11 33 1.1 8 5 29 -20 43 35 -20 6 14 -23 13 35 -18 0 8 0.30 72 0 0 -15 10 47 11 33 17.1 14 4 27 -15 25 32 -14 56 12 -17 18 38 -13 14 24 0.43 73 0 0 -10 50 5 11 33 36.3 18 4 25 -11 2 33 -10 37 43 -12 36 43 - 9 10 23 0.47 74 0 0 - 7 3 48 11 33 57.3 22 3 22 - 7 14 46 - 6 52 55 - 8 36 50 - 5 35 30 0.49 75 0 0 - 3 42 45 11 34 19.5 25 3 20 - 3 52 36 - 3 32 56 - 5 6 5 - 2 22 53 0.50 76 0 0 - 0 41 30 11 34 42.3 28 2 18 - 0 50 30 - 0 32 31 - 1 57 27 0 31 47 0.51 77 0 0 2 3 31 11 35 5.4 31 2 16 1 55 11 2 11 49 0 53 26 3 11 28 0.52 78 0 0 4 34 49 11 35 28.6 34 1 13 4 27 2 4 42 34 3 29 31 5 38 21 0.53 79 0 0 6 54 17 11 35 51.8 36 0 11 6 46 58 7 1 34 5 53 1 7 54 5 0.53 80 0 0 9 3 25 11 36 14.7 38 360 10 8 56 30 9 10 18 8 5 35 9 59 59 0.54 81 0 0 11 3 23 11 36 37.3 40 359 8 10 56 49 11 9 55 10 8 32 11 57 9 0.54 82 0 0 12 55 10 11 36 59.5 42 358 6 12 48 55 13 1 25 12 2 56 13 46 29 0.55 83 0 0 14 39 36 11 37 21.4 44 358 4 14 33 37 14 45 34 13 49 39 15 28 43 0.55 84 0 0 16 17 22 11 37 42.8 45 357 3 16 11 37 16 23 5 15 29 28 17 4 31 0.56 85 0 0 17 49 3 11 38 3.8 47 356 1 17 43 32 17 54 34 17 2 59 18 34 27 0.56 86 0 0 19 15 11 11 38 24.3 48 355 0 19 9 52 19 20 30 18 30 47 19 59 0 0.56 87 0 0 20 36 13 11 38 44.4 49 354 -2 20 31 4 20 41 21 19 53 19 21 18 35 0.57 88 0 0 21 52 33 11 39 4.0 50 353 -3 21 47 34 21 57 32 21 11 1 22 33 35 0.57 89 0 0 23 4 32 11 39 23.1 51 352 -5 22 59 42 23 9 22 22 24 15 23 44 22 0.57 90 0 0 24 12 29 11 39 41.9 52 351 -6 24 7 47 24 17 10 23 33 20 24 51 12 0.58 91 0 0 25 16 40 11 40 0.1 53 350 -7 25 12 6 25 21 15 24 38 35 25 54 22 0.58 92 0 0 26 17 22 11 40 18.0 54 349 -9 26 12 55 26 21 49 25 40 15 26 54 8 0.58 93 0 0 27 14 48 11 40 35.4 55 348 -10 27 10 26 27 19 8 26 38 35 27 50 41 0.58 94 0 0 28 9 9 11 40 52.5 55 347 -11 28 4 54 28 13 24 27 33 46 28 44 13 0.58 95 0 0 29 0 38 11 41 9.2 56 346 -12 28 56 28 29 4 47 28 26 1 29 34 57 0.59 96 0 0 29 49 24 11 41 25.5 57 344 -13 29 45 20 29 53 28 29 15 31 30 23 1 0.59 97 0 0 30 35 37 11 41 41.4 57 343 -15 30 31 37 30 39 36 30 2 23 31 8 34 0.59 98 0 0 31 19 24 11 41 57.0 57 342 -16 31 15 29 31 23 19 30 46 49 31 51 45 0.59 99 0 0 32 0 55 11 42 12.3 58 341 -17 31 57 4 32 4 46 31 28 54 32 32 42 0.59 100 0 0 32 40 16 11 42 27.2 58 340 -18 32 36 29 32 44 3 32 8 48 33 11 31 0.59 101 0 0 33 17 33 11 42 41.9 58 339 -19 33 13 50 33 21 16 32 46 35 33 48 18 0.60 102 0 0 33 52 52 11 42 56.2 59 338 -20 33 49 12 33 56 32 33 22 23 34 23 9 0.60 103 0 0 34 26 20 11 43 10.3 59 337 -21 34 22 43 34 29 56 33 56 17 34 56 10 0.60 104 0 0 34 58 0 11 43 24.2 59 335 -22 34 54 26 35 1 34 34 28 23 35 27 26 0.60 105 0 0 35 27 58 11 43 37.7 59 334 -23 35 24 27 35 31 29 34 58 44 35 57 1 0.60 106 0 0 35 56 18 11 43 51.0 59 333 -24 35 52 49 35 59 46 35 27 26 36 24 59 0.60 107 0 0 36 23 3 11 44 4.1 59 332 -25 36 19 37 36 26 29 35 54 32 36 51 25 0.60 108 0 0 36 48 18 11 44 17.0 59 331 -26 36 44 55 36 51 42 36 20 6 37 16 21 0.60 109 0 0 37 12 6 11 44 29.7 59 331 -26 37 8 45 37 15 28 36 44 12 37 39 51 0.60 110 0 0 37 34 30 11 44 42.1 59 330 -27 37 31 11 37 37 50 37 6 53 38 1 58 0.60 111 0 0 37 55 33 11 44 54.4 59 329 -28 37 52 16 37 58 51 37 28 12 38 22 46 0.60 112 0 0 38 15 17 11 45 6.4 59 328 -29 38 12 2 38 18 33 37 48 11 38 42 16 0.60 113 0 0 38 33 46 11 45 18.3 58 327 -30 38 30 31 38 37 0 38 6 52 39 0 30 0.60 114 0 0 38 51 0 11 45 30.1 58 327 -31 38 47 47 38 54 12 38 24 19 39 17 32 0.60 115 0 0 39 7 2 11 45 41.6 58 326 -32 39 3 51 39 10 13 38 40 34 39 33 23 0.60 116 0 0 39 21 55 11 45 53.0 58 325 -32 39 18 45 39 25 5 38 55 37 39 48 5 0.61 117 0 0 39 35 39 11 46 4.3 57 325 -33 39 32 31 39 38 48 39 9 31 40 1 40 0.61 118 0 0 39 48 17 11 46 15.4 57 324 -34 39 45 10 39 51 25 39 22 19 40 14 8 0.61 119 0 0 39 59 50 11 46 26.4 57 324 -35 39 56 43 40 2 56 39 34 0 40 25 33 0.61 120 0 0 40 10 19 11 46 37.3 56 323 -36 40 7 13 40 13 24 39 44 36 40 35 54 0.61 121 0 0 40 19 45 11 46 48.0 56 323 -36 40 16 40 40 22 50 39 54 9 40 45 14 0.61 122 0 0 40 28 10 11 46 58.7 56 322 -37 40 25 5 40 31 14 40 2 40 40 53 32 0.61 123 0 0 40 35 33 11 47 9.2 55 322 -38 40 32 30 40 38 37 40 10 9 41 0 51 0.61 124 0 0 40 41 58 11 47 19.6 55 322 -39 40 38 55 40 45 0 40 16 38 41 7 10 0.61 125 0 0 40 47 22 11 47 29.9 54 321 -40 40 44 20 40 50 25 40 22 7 41 12 31 0.60 126 0 0 40 51 49 11 47 40.2 54 321 -40 40 48 47 40 54 51 40 26 36 41 16 54 0.60 127 0 0 40 55 17 11 47 50.3 54 321 -41 40 52 15 40 58 19 40 30 7 41 20 20 0.60 128 0 0 40 57 48 11 48 0.4 53 321 -42 40 54 46 41 0 49 40 32 40 41 22 49 0.60 129 0 0 40 59 21 11 48 10.4 53 321 -43 40 56 20 41 2 22 40 34 15 41 24 21 0.60 130 0 0 40 59 57 11 48 20.3 52 320 -44 40 56 56 41 2 58 40 34 51 41 24 56 0.60 131 0 0 40 59 36 11 48 30.1 52 320 -44 40 56 35 41 2 37 40 34 31 41 24 35 0.60 132 0 0 40 58 18 11 48 39.9 51 320 -45 40 55 17 41 1 20 40 33 12 41 23 18 0.60 133 0 0 40 56 3 11 48 49.6 51 320 -46 40 53 2 40 59 5 40 30 56 41 21 4 0.60 134 0 0 40 52 51 11 48 59.2 50 320 -47 40 49 49 40 55 53 40 27 42 41 17 54 0.60 135 0 0 40 48 41 11 49 8.8 49 320 -48 40 45 39 40 51 43 40 23 29 41 13 47 0.60 136 0 0 40 43 34 11 49 18.4 49 320 -48 40 40 31 40 46 36 40 18 19 41 8 42 0.60 137 0 0 40 37 28 11 49 27.9 48 320 -49 40 34 25 40 40 30 40 12 9 41 2 40 0.60 138 0 0 40 30 23 11 49 37.3 48 320 -50 40 27 19 40 33 26 40 4 59 40 55 39 0.60 139 0 0 40 22 18 11 49 46.7 47 320 -51 40 19 14 40 25 22 39 56 49 40 47 40 0.60 140 0 0 40 13 13 11 49 56.1 47 321 -51 40 10 8 40 16 18 39 47 38 40 38 41 0.60 141 0 0 40 3 7 11 50 5.4 46 321 -52 40 0 1 40 6 12 39 37 25 40 28 41 0.60 142 0 0 39 51 58 11 50 14.7 45 321 -53 39 48 52 39 55 4 39 26 9 40 17 40 0.60 143 0 0 39 39 46 11 50 24.0 45 321 -54 39 36 38 39 42 53 39 13 49 40 5 35 0.60 144 0 0 39 26 29 11 50 33.2 44 321 -55 39 23 21 39 29 38 39 0 24 39 52 27 0.59 145 0 0 39 12 7 11 50 42.4 43 321 -56 39 8 57 39 15 16 38 45 52 39 38 14 0.59 146 0 0 38 56 37 11 50 51.5 43 322 -56 38 53 26 38 59 48 38 30 11 39 22 55 0.59 147 0 0 38 39 58 11 51 0.7 42 322 -57 38 36 46 38 43 10 38 13 21 39 6 27 0.59 148 0 0 38 22 8 11 51 9.8 41 322 -58 38 18 54 38 25 22 37 55 19 38 48 49 0.59 149 0 0 38 3 6 11 51 18.9 40 322 -59 37 59 50 38 6 21 37 36 4 38 30 0 0.59 150 0 0 37 42 48 11 51 27.9 40 323 -60 37 39 32 37 46 5 37 15 32 38 9 56 0.59 151 0 0 37 21 14 11 51 36.9 39 323 -61 37 17 56 37 24 33 36 53 43 37 48 37 0.59 152 0 0 36 58 21 11 51 45.9 38 323 -62 36 55 0 37 1 41 36 30 34 37 25 59 0.59 153 0 0 36 34 5 11 51 54.9 37 323 -63 36 30 42 36 37 28 36 6 1 37 2 0 0.59 154 0 0 36 8 25 11 52 3.8 36 324 -64 36 5 0 36 11 49 35 40 3 36 36 37 0.59 155 0 0 35 41 16 11 52 12.7 35 324 -65 35 37 49 35 44 43 35 12 35 36 9 48 0.58 156 0 0 35 12 37 11 52 21.6 35 324 -65 35 9 7 35 16 6 34 43 35 35 41 29 0.58 157 0 0 34 42 23 11 52 30.4 34 325 -66 34 38 51 34 45 55 34 13 0 35 11 36 0.58 158 0 0 34 10 31 11 52 39.2 33 325 -67 34 6 56 34 14 6 33 40 44 34 40 7 0.58 159 0 0 33 36 56 11 52 47.9 32 325 -68 33 33 18 33 40 34 33 6 45 34 6 56 0.58 160 0 0 33 1 35 11 52 56.6 31 326 -69 32 57 54 33 5 16 32 30 58 33 32 1 0.58 161 0 0 32 24 22 11 53 5.2 30 326 -71 32 20 38 32 28 6 31 53 17 32 55 15 0.58 162 0 0 31 45 13 11 53 13.7 29 326 -72 31 41 25 31 49 0 31 13 38 32 16 35 0.58 163 0 0 31 4 2 11 53 22.1 28 327 -73 31 0 10 31 7 53 30 31 55 31 35 54 0.58 164 0 0 30 20 42 11 53 30.4 27 327 -74 30 16 47 30 24 38 29 48 3 30 53 8 0.58 165 0 0 29 35 9 11 53 38.7 26 327 -75 29 31 9 29 39 9 29 1 54 30 8 10 0.57 166 0 0 28 47 15 11 53 46.8 24 328 -76 28 43 11 28 51 19 28 13 22 29 20 53 0.57 167 0 0 27 56 53 11 53 54.7 23 328 -77 27 52 43 28 1 2 27 22 19 28 31 10 0.57 168 0 0 27 3 54 11 54 2.5 22 328 -78 26 59 39 27 8 8 26 28 37 27 38 53 0.57 169 0 0 26 8 10 11 54 10.0 21 329 -79 26 3 50 26 12 29 25 32 7 26 43 54 0.57 170 0 0 25 9 31 11 54 17.4 19 329 -80 25 5 6 25 13 57 24 32 39 25 46 4 0.57 171 0 0 24 7 49 11 54 24.5 18 329 -82 24 3 16 24 12 20 23 30 3 24 45 13 0.57 172 0 0 23 2 50 11 54 31.3 17 330 -82 22 58 11 23 7 29 22 24 7 23 41 10 0.57 173 0 0 21 54 24 11 54 37.8 15 330 -83 21 49 37 21 59 10 21 14 39 22 33 44 0.57 174 0 0 20 42 16 11 54 43.9 14 330 -84 20 37 22 20 47 10 20 1 26 21 22 40 0.57 175 0 0 19 26 13 11 54 49.5 12 331 -84 19 21 10 19 31 16 18 44 11 20 7 47 0.58 176 0 0 18 5 59 11 54 54.6 10 331 -83 18 0 47 18 11 10 17 22 39 18 48 48 0.58 177 0 0 16 41 15 11 54 59.2 9 331 -83 16 35 53 16 46 37 15 56 31 17 25 26 0.59 178 0 0 15 11 43 11 55 3.1 7 332 -82 15 6 10 15 17 16 14 25 26 15 57 23 0.60 179 0 0 13 37 1 11 55 6.2 5 332 -80 13 31 16 13 42 45 12 49 2 14 24 18 0.62 180 0 0 11 56 44 11 55 8.5 3 332 -79 11 50 46 12 2 42 11 6 53 12 45 48 0.67 -179 0 0 10 10 25 11 55 9.7 1 332 -77 10 4 12 10 16 37 9 18 30 11 1 28 0.90 Uncertainty in time = +/- 6 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 755-073273 * constellation : Cepheus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 22 24 30.0142 DE: +60 48 33.105 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 22 24 30.0135 DE: +60 48 33.103 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 10.0 * B mag [mag]: 10.3 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4954) Eric asteroid class: approx. diameter [km]: 10 approx. diameter ["]: 0.036 distance from Earth [AU]: 0.37270 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#692 date of fit: 2023 Jul 15 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): 0.175", 0.034", 173.646° remarks: * orbital elements for (4954)Eric : Mean anomaly = 7.9316176878 deg Arg. of pericenter = 52.6216032353 deg Long. of node = 358.4030558198 deg Inclination = 17.4270802914 deg Eccentricity = 0.4494998173 Semimajor axis = 2.0015906929 AU Perihelion dist = 1.1018760421 AU Mag: H = 12.57, G = 0.15 Epoch of elements : MJD 60657.48890800 TDT (2024 Dec 13.4889) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#6922023Jul15,1.18,2024,12,13,11.733505,0.391957,-0.331102,2.978874,3.524744,0.001835,0.000838,0.000000,0.000000 77.6804,60.9402,2.60,-23.19,False UCAC4 755-073273,22.40833738,60.8091962,10.26,10.01,9.88,0.0,0,,22.42245017,60.9402072,2.84,2.56,0,0,0 4954,Eric,12.77,9.613,0.3727,0,0,9.657,83.14,,1.0,0 0,7.7615,2024,12,13,52.6216,358.4031,17.4271,0.44950,2.00159,1.10188,12.56,5.0,0.15 4.644,0.1753,0.0343,174,0.1298,Known errors,0.91,0,-1,-1 20241213_073273,60140.74 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:43 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org