IOTA/IOTA-ES occultation update for (4063) Euforbo / UCAC4 511-011677 event on 2023 Jan 02, 07:51 UT Visible from USA, Canada Summary ------- On 2023 Jan 02 UT, the 99.6 km diameter asteroid (4063) Euforbo will occult a 12.5 mag star in the constellation Orion for observers along a path across USA, Canada. In the case of an occultation, the combined light of the asteroid and the star will drop by 2.92 mag to 15.33 mag (the magnitude of the asteroid) for at most 6.330 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: 94 * date and approx. time of event: 2023 Jan 02, 07:46 - 2023 Jan 02, 07:56 * geocentric midpoint of event [JD]: 2459946.82742245 * magnitude of target star: 12.49 * magnitude drop [mag]: 2.92 * estimated maximum duration [s]: 6.330 * Moon: 81 % sunlit, 35° distance * Sun: 158° distance * rough path description: USA, Canada The occultation path -------------------- * approximate projected width [km]: 136 * 1 sigma uncertainty interval [path widths]: +/- 0.46 * 1 sigma uncertainty interval [seconds]: +/- 3.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.026, +/- 0.009) * 1 sigma uncertainty ellipse (major, minor, PA): (0.027", 0.003", 70°) * approx speed of asteroid's shadow [km/s]: 15.7425 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 511-011677 by 4063 Euforbo on 2023 Jan 2 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 110 0 0 .. .. .... .. .. .. .. .. .. 60 43 10 .. .. .. 61 21 1 .. .. .. .... 111 0 0 60 16 26 7 56 25.0 0 66 -2 60 56 58 59 36 23 61 34 42 .. .. .. .... 112 0 0 60 30 1 7 56 24.9 1 67 -3 61 10 26 59 50 5 61 48 3 59 13 46 -0.82 113 0 0 60 43 17 7 56 24.8 1 67 -3 61 23 35 60 3 28 62 1 6 59 27 14 -0.86 114 0 0 60 56 14 7 56 24.7 2 68 -4 61 36 25 60 16 31 62 13 49 59 40 24 -0.88 115 0 0 61 8 52 7 56 24.5 3 69 -4 61 48 56 60 29 16 62 26 13 59 53 14 -0.88 116 0 0 61 21 11 7 56 24.2 3 70 -5 62 1 8 60 41 41 62 38 19 60 5 46 -0.89 117 0 0 61 33 11 7 56 23.9 4 71 -5 62 13 1 60 53 48 62 50 5 60 17 58 -0.90 118 0 0 61 44 52 7 56 23.6 4 72 -6 62 24 36 61 5 36 63 1 34 60 29 52 -0.90 119 0 0 61 56 16 7 56 23.2 5 73 -6 62 35 53 61 17 6 63 12 44 60 41 28 -0.90 120 0 0 62 7 21 7 56 22.8 5 74 -7 62 46 51 61 28 17 63 23 36 60 52 45 -0.91 121 0 0 62 18 8 7 56 22.3 6 74 -7 62 57 32 61 39 11 63 34 10 61 3 44 -0.91 122 0 0 62 28 37 7 56 21.8 6 75 -8 63 7 54 61 49 46 63 44 27 61 14 25 -0.91 123 0 0 62 38 48 7 56 21.3 7 76 -8 63 17 59 62 0 4 63 54 26 61 24 48 -0.91 124 0 0 62 48 42 7 56 20.7 7 77 -9 63 27 47 62 10 4 64 4 7 61 34 54 -0.91 125 0 0 62 58 19 7 56 20.1 8 78 -9 63 37 17 62 19 46 64 13 32 61 44 42 -0.91 126 0 0 63 7 38 7 56 19.5 8 79 -9 63 46 31 62 29 11 64 22 39 61 54 12 -0.91 127 0 0 63 16 41 7 56 18.8 9 80 -10 63 55 27 62 38 20 64 31 30 62 3 25 -0.91 128 0 0 63 25 26 7 56 18.1 9 81 -10 64 4 7 62 47 11 64 40 4 62 12 22 -0.91 129 0 0 63 33 55 7 56 17.4 9 82 -11 64 12 30 62 55 45 64 48 21 62 21 1 -0.92 130 0 0 63 42 7 7 56 16.6 10 83 -11 64 20 36 63 4 3 64 56 23 62 29 23 -0.92 131 0 0 63 50 3 7 56 15.8 10 83 -12 64 28 27 63 12 4 65 4 8 62 37 29 -0.92 132 0 0 63 57 43 7 56 15.0 11 84 -12 64 36 1 63 19 49 65 11 37 62 45 19 -0.92 133 0 0 64 5 6 7 56 14.2 11 85 -13 64 43 19 63 27 18 65 18 51 62 52 52 -0.92 134 0 0 64 12 14 7 56 13.3 12 86 -13 64 50 22 63 34 30 65 25 49 63 0 9 -0.92 135 0 0 64 19 6 7 56 12.4 12 87 -13 64 57 9 63 41 27 65 32 31 63 7 10 -0.92 136 0 0 64 25 42 7 56 11.5 13 88 -14 65 3 41 63 48 8 65 38 58 63 13 55 -0.92 137 0 0 64 32 3 7 56 10.5 13 89 -14 65 9 57 63 54 33 65 45 10 63 20 24 -0.92 138 0 0 64 38 9 7 56 9.6 13 90 -15 65 15 58 64 0 43 65 51 7 63 26 38 -0.92 139 0 0 64 43 59 7 56 8.6 14 91 -15 65 21 44 64 6 38 65 56 49 63 32 36 -0.92 140 0 0 64 49 34 7 56 7.5 14 92 -16 65 27 15 64 12 17 66 2 16 63 38 19 -0.92 141 0 0 64 54 55 7 56 6.5 15 93 -16 65 32 32 64 17 41 66 7 29 63 43 47 -0.92 142 0 0 65 0 0 7 56 5.4 15 94 -17 65 37 33 64 22 50 66 12 27 63 48 59 -0.92 143 0 0 65 4 51 7 56 4.3 16 94 -17 65 42 21 64 27 45 66 17 10 63 53 57 -0.92 144 0 0 65 9 27 7 56 3.2 16 95 -17 65 46 53 64 32 24 66 21 40 63 58 39 -0.92 145 0 0 65 13 49 7 56 2.0 16 96 -18 65 51 12 64 36 49 66 25 55 64 3 7 -0.92 146 0 0 65 17 56 7 56 0.9 17 97 -18 65 55 16 64 40 59 66 29 56 64 7 20 -0.92 147 0 0 65 21 49 7 55 59.7 17 98 -19 65 59 6 64 44 55 66 33 43 64 11 19 -0.92 148 0 0 65 25 28 7 55 58.4 18 99 -19 66 2 42 64 48 37 66 37 17 64 15 2 -0.92 149 0 0 65 28 53 7 55 57.2 18 100 -19 66 6 4 64 52 4 66 40 36 64 18 32 -0.92 150 0 0 65 32 3 7 55 55.9 18 101 -20 66 9 12 64 55 17 66 43 42 64 21 47 -0.92 151 0 0 65 35 0 7 55 54.7 19 102 -20 66 12 7 64 58 16 66 46 34 64 24 48 -0.92 152 0 0 65 37 43 7 55 53.4 19 103 -21 66 14 47 65 1 0 66 49 13 64 27 34 -0.92 153 0 0 65 40 12 7 55 52.0 20 104 -21 66 17 14 65 3 31 66 51 38 64 30 7 -0.92 154 0 0 65 42 27 7 55 50.7 20 105 -22 66 19 28 65 5 48 66 53 50 64 32 25 -0.92 155 0 0 65 44 28 7 55 49.3 20 106 -22 66 21 27 65 7 51 66 55 49 64 34 29 -0.92 156 0 0 65 46 16 7 55 47.9 21 107 -22 66 23 14 65 9 40 66 57 34 64 36 19 -0.92 157 0 0 65 47 50 7 55 46.5 21 108 -23 66 24 47 65 11 15 66 59 6 64 37 55 -0.92 158 0 0 65 49 10 7 55 45.1 21 109 -23 66 26 6 65 12 36 67 0 24 64 39 18 -0.92 159 0 0 65 50 17 7 55 43.6 22 110 -24 66 27 13 65 13 44 67 1 30 64 40 26 -0.92 160 0 0 65 51 11 7 55 42.1 22 111 -24 66 28 6 65 14 38 67 2 22 64 41 21 -0.92 161 0 0 65 51 51 7 55 40.6 23 112 -24 66 28 45 65 15 19 67 3 1 64 42 1 -0.93 162 0 0 65 52 17 7 55 39.1 23 113 -25 66 29 11 65 15 45 67 3 27 64 42 28 -0.93 163 0 0 65 52 31 7 55 37.5 23 113 -25 66 29 24 65 15 59 67 3 40 64 42 41 -0.93 164 0 0 65 52 30 7 55 36.0 24 114 -26 66 29 24 65 15 58 67 3 40 64 42 41 -0.93 165 0 0 65 52 16 7 55 34.4 24 115 -26 66 29 11 65 15 44 67 3 27 64 42 26 -0.93 166 0 0 65 51 49 7 55 32.7 24 116 -26 66 28 44 65 15 16 67 3 1 64 41 58 -0.93 167 0 0 65 51 8 7 55 31.1 25 117 -27 66 28 4 65 14 35 67 2 21 64 41 16 -0.93 168 0 0 65 50 14 7 55 29.4 25 118 -27 66 27 11 65 13 40 67 1 29 64 40 20 -0.93 169 0 0 65 49 7 7 55 27.7 26 119 -28 66 26 4 65 12 31 67 0 23 64 39 11 -0.93 170 0 0 65 47 45 7 55 26.0 26 120 -28 66 24 44 65 11 9 66 59 5 64 37 47 -0.93 171 0 0 65 46 11 7 55 24.3 26 121 -28 66 23 11 65 9 33 66 57 33 64 36 10 -0.93 172 0 0 65 44 23 7 55 22.5 27 122 -29 66 21 24 65 7 43 66 55 48 64 34 19 -0.93 173 0 0 65 42 21 7 55 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26 -0.95 - 60 0 0 28 53 13 7 47 1.9 18 274 -40 29 32 59 28 13 55 30 9 57 27 38 9 -0.95 - 59 0 0 28 32 5 7 46 59.0 18 275 -39 29 11 44 27 52 53 29 48 37 27 17 13 -0.95 - 58 0 0 28 11 17 7 46 56.4 17 275 -38 28 50 50 27 32 11 29 27 36 26 56 36 -0.95 - 57 0 0 27 50 51 7 46 53.8 16 276 -37 28 30 17 27 11 50 29 6 58 26 36 21 -0.95 - 56 0 0 27 30 46 7 46 51.4 15 276 -36 28 10 6 26 51 51 28 46 41 26 16 27 -0.95 - 55 0 0 27 11 3 7 46 49.2 14 277 -35 27 50 17 26 32 14 28 26 46 25 56 55 -0.96 - 54 0 0 26 51 43 7 46 47.0 13 277 -34 27 30 51 26 13 0 28 7 14 25 37 46 -0.96 - 53 0 0 26 32 45 7 46 45.0 12 278 -33 27 11 48 25 54 9 27 48 6 25 19 0 -0.96 - 52 0 0 26 14 12 7 46 43.2 11 278 -32 26 53 9 25 35 41 27 29 21 25 0 37 -0.97 - 51 0 0 25 56 2 7 46 41.5 10 279 -32 26 34 53 25 17 37 27 11 0 24 42 38 -0.97 - 50 0 0 25 38 17 7 46 39.9 9 279 -31 26 17 3 24 59 57 26 53 4 24 25 3 -0.98 - 49 0 0 25 20 57 7 46 38.5 8 280 -30 25 59 37 24 42 42 26 35 33 24 7 53 -0.98 - 48 0 0 25 4 2 7 46 37.3 7 280 -29 25 42 36 24 25 52 26 18 28 23 51 8 -0.99 - 47 0 0 24 47 33 7 46 36.1 7 280 -28 25 26 2 24 9 28 26 1 48 23 34 48 -1.00 - 46 0 0 24 31 29 7 46 35.2 6 281 -27 25 9 53 23 53 29 25 45 35 23 18 54 -1.02 - 45 0 0 24 15 52 7 46 34.3 5 281 -26 24 54 11 23 37 57 25 29 48 23 3 26 -1.04 - 44 0 0 24 0 42 7 46 33.7 4 282 -25 24 38 56 23 22 52 25 14 28 22 48 25 -1.07 - 43 0 0 23 45 59 7 46 33.1 3 282 -24 24 24 8 23 8 13 24 59 36 22 33 50 -1.12 - 42 0 0 23 31 43 7 46 32.8 2 283 -23 24 9 48 22 54 2 24 45 11 22 19 43 -1.22 - 41 0 0 23 17 55 7 46 32.5 1 283 -22 23 55 55 22 40 18 24 31 14 22 6 2 -1.53 - 40 0 0 .. .. .... .. .. .. .. .. .. 23 42 31 .. .. .. 24 17 45 .. .. .. .... Uncertainty in time = +/- 5 secs Prediction of 2022 Dec 1.1 Data for the target star ------------------------ * name: UCAC4 511-011677 * constellation : Orion * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 05 30 46.9648 DE: +12 11 24.352 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 05 30 46.9648 DE: +12 11 24.352 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.5 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4063) Euforbo asteroid class: approx. diameter [km]: 100 approx. diameter ["]: 0.038 distance from Earth [AU]: 3.65200 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#89 date of fit: 2022 Nov 23 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): 0.027", 0.003", 70.497° remarks: * orbital elements for (4063)Euforbo : Mean anomaly = 10.3328034546 deg Arg. of pericenter = 318.6599005672 deg Long. of node = 113.5199438863 deg Inclination = 18.9391989440 deg Eccentricity = 0.1197775896 Semimajor axis = 5.1894702747 AU Perihelion dist = 4.5678880338 AU Mag: H = 8.80, G = 0.15 Epoch of elements : MJD 59946.32722222 TDT (2023 Jan 02.3272) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#892022Nov23,6.33,2023,1,2,7.858139,0.225239,0.641441,-8.383701,2.943742,0.001927,0.001213,0.000001,0.000000 -136.5486,12.2076,63.09,-22.93,False UCAC4 511-011677,5.51304578,12.1900978,0.00,12.49,0.00,0.0,0,,5.53470122,12.2075844,2.92,0.00,0,0,0 4063,Euforbo,15.33,99.6,3.6520,0,0,-1.376,7.09,,6.8,0 0,10.3055,2023,1,2,318.6599,113.5199,18.9392,0.11978,5.18947,4.56789,8.82,5.0,0.15 1.460,0.0273,0.0028,70,0.0173,Known errors,-1.00,-1,-1,-1 20230102_011677,59914.09 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2022 Dec 01, 02:07 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org