IOTA/IOTA-ES occultation update for (742) Edisona / TYC 6856-00586-1 event on 2009 Jun 04, 01:29 UT Visible from Summary ------- On 2009 Jun 04 UT, the 46 km diameter asteroid (742) Edisona will occult a 9.0 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.9 mag to 13.9 mag (the magnitude of the asteroid) for at most 4.2 seconds. This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Alice Monet, historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: UCAC. The event at a glimpse ---------------------- * Rank: 55 * date and approx. time of event: 2009 Jun 04, 01:20 - 2009 Jun 04, 01:38 UT * magnitude of target star: 9.0 * magnitude drop [mag]: 4.9 * estimated maximum duration [s]: 4.2 * Moon: 87 % sunlit, 61° distance * Sun: 159° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 48 * 1 sigma uncertainty interval [path widths]: +/- 1.14 * 1 sigma uncertainty interval [seconds]: +/- 5.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .049 +/- .033) * 1 sigma uncertainty ellipse (major, minor, PA): ( .049", .032", 95° ) * approx speed of asteroid's shadow [km/s]: 10.8783 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6856-00586-1 by 742 Edisona on 2009 Jun 4 Centre Star Star Sun Path Limits Error Limits E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4 o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " Latitude Latitude Latitude Latitude - 97 0 0 - 8 38 8 1 38 54 1 120 -20 - 8 23 10 - 8 53 5 - 7 48 58 - 9 27 4 - 96 0 0 - 9 12 2 1 38 53 2 120 -21 - 8 57 9 - 9 26 54 - 8 23 6 -10 0 44 - 95 0 0 - 9 45 14 1 38 53 3 120 -22 - 9 30 25 -10 0 2 - 8 56 32 -10 33 42 - 94 0 0 -10 17 43 1 38 52 4 120 -23 -10 2 58 -10 32 26 - 9 29 15 -11 5 57 - 93 0 0 -10 49 29 1 38 51 5 119 -24 -10 34 48 -11 4 8 -10 1 15 -11 37 29 - 92 0 0 -11 20 32 1 38 50 6 119 -26 -11 5 55 -11 35 7 -10 32 32 -12 8 18 - 91 0 0 -11 50 52 1 38 48 8 119 -27 -11 36 19 -12 5 23 -11 3 5 -12 38 25 - 90 0 0 -12 20 29 1 38 47 9 119 -28 -12 6 0 -12 34 56 -11 32 56 -13 7 49 - 89 0 0 -12 49 23 1 38 45 10 119 -29 -12 34 59 -13 3 46 -12 2 3 -13 36 30 - 88 0 0 -13 17 34 1 38 43 11 118 -30 -13 3 14 -13 31 54 -12 30 28 -14 4 29 - 87 0 0 -13 45 3 1 38 41 12 118 -31 -13 30 47 -13 59 19 -12 58 9 -14 31 46 - 86 0 0 -14 11 50 1 38 38 13 118 -32 -13 57 37 -14 26 1 -13 25 8 -14 58 20 - 85 0 0 -14 37 54 1 38 36 14 118 -33 -14 23 44 -14 52 2 -13 51 24 -15 24 12 - 84 0 0 -15 3 15 1 38 33 15 118 -34 -14 49 10 -15 17 20 -14 16 58 -15 49 22 - 83 0 0 -15 27 55 1 38 30 16 117 -35 -15 13 53 -15 41 56 -14 41 49 -16 13 50 - 82 0 0 -15 51 53 1 38 27 17 117 -36 -15 37 54 -16 5 51 -15 5 58 -16 37 37 - 81 0 0 -16 15 9 1 38 24 18 117 -37 -16 1 14 -16 29 4 -15 29 26 -17 0 42 - 80 0 0 -16 37 44 1 38 20 19 117 -38 -16 23 52 -16 51 35 -15 52 11 -17 23 6 - 79 0 0 -16 59 38 1 38 17 20 116 -39 -16 45 49 -17 13 26 -16 14 16 -17 44 50 - 78 0 0 -17 20 51 1 38 13 21 116 -40 -17 7 6 -17 34 36 -16 35 39 -18 5 53 - 77 0 0 -17 41 24 1 38 9 22 116 -41 -17 27 41 -17 55 5 -16 56 21 -18 26 15 - 76 0 0 -18 1 16 1 38 5 23 116 -42 -17 47 36 -18 14 54 -17 16 23 -18 45 58 - 75 0 0 -18 20 28 1 38 1 24 115 -43 -18 6 51 -18 34 3 -17 35 44 -19 5 0 - 74 0 0 -18 39 0 1 37 57 25 115 -44 -18 25 25 -18 52 33 -17 54 25 -19 23 23 - 73 0 0 -18 56 52 1 37 52 26 115 -45 -18 43 20 -19 10 22 -18 12 27 -19 41 7 - 72 0 0 -19 14 5 1 37 47 27 115 -46 -19 0 36 -19 27 33 -18 29 48 -19 58 12 - 71 0 0 -19 30 39 1 37 43 28 114 -47 -19 17 13 -19 44 4 -18 46 30 -20 14 38 - 70 0 0 -19 46 34 1 37 38 29 114 -48 -19 33 10 -19 59 57 -19 2 33 -20 30 25 - 69 0 0 -20 1 51 1 37 33 30 114 -49 -19 48 29 -20 15 11 -19 17 58 -20 45 34 - 68 0 0 -20 16 29 1 37 28 31 113 -50 -20 3 9 -20 29 47 -19 32 43 -21 0 5 - 67 0 0 -20 30 29 1 37 23 32 113 -51 -20 17 12 -20 43 46 -19 46 50 -21 13 58 - 66 0 0 -20 43 51 1 37 17 33 113 -52 -20 30 36 -20 57 6 -20 0 19 -21 27 14 - 65 0 0 -20 56 36 1 37 12 33 113 -53 -20 43 23 -21 9 49 -20 13 11 -21 39 52 - 64 0 0 -21 8 43 1 37 6 34 113 -54 -20 55 32 -21 21 54 -20 25 24 -21 51 54 - 63 0 0 -21 20 14 1 37 1 35 112 -54 -21 7 4 -21 33 23 -20 37 0 -22 3 18 - 62 0 0 -21 31 7 1 36 55 36 112 -55 -21 17 59 -21 44 14 -20 47 59 -22 14 6 - 61 0 0 -21 41 23 1 36 49 37 112 -56 -21 28 17 -21 54 29 -20 58 21 -22 24 17 - 60 0 0 -21 51 4 1 36 43 38 112 -57 -21 37 59 -22 4 8 -21 8 6 -22 33 52 - 59 0 0 -22 0 7 1 36 37 39 111 -58 -21 47 4 -22 13 10 -21 17 14 -22 42 52 - 58 0 0 -22 8 35 1 36 31 40 111 -59 -21 55 33 -22 21 36 -21 25 46 -22 51 15 - 57 0 0 -22 16 26 1 36 25 41 111 -60 -22 3 25 -22 29 27 -21 33 42 -22 59 2 - 56 0 0 -22 23 42 1 36 19 42 111 -61 -22 10 42 -22 36 41 -21 41 1 -23 6 15 - 55 0 0 -22 30 22 1 36 12 42 111 -62 -22 17 24 -22 43 20 -21 47 45 -23 12 51 - 54 0 0 -22 36 27 1 36 6 43 110 -63 -22 23 29 -22 49 24 -21 53 53 -23 18 53 - 53 0 0 -22 41 56 1 35 59 44 110 -64 -22 28 59 -22 54 53 -21 59 25 -23 24 19 - 52 0 0 -22 46 50 1 35 52 45 110 -64 -22 33 54 -22 59 46 -22 4 21 -23 29 11 - 51 0 0 -22 51 9 1 35 46 46 110 -65 -22 38 14 -23 4 4 -22 8 43 -23 33 28 - 50 0 0 -22 54 53 1 35 39 47 110 -66 -22 41 59 -23 7 48 -22 12 29 -23 37 10 - 49 0 0 -22 58 3 1 35 32 48 110 -67 -22 45 8 -23 10 56 -22 15 40 -23 40 17 - 48 0 0 -23 0 37 1 35 25 49 110 -68 -22 47 43 -23 13 30 -22 18 15 -23 42 50 - 47 0 0 -23 2 36 1 35 17 49 110 -69 -22 49 43 -23 15 29 -22 20 16 -23 44 48 - 46 0 0 -23 4 1 1 35 10 50 110 -70 -22 51 8 -23 16 54 -22 21 42 -23 46 13 - 45 0 0 -23 4 52 1 35 3 51 110 -71 -22 51 59 -23 17 44 -22 22 33 -23 47 2 - 44 0 0 -23 5 8 1 34 56 52 110 -72 -22 52 15 -23 18 0 -22 22 49 -23 47 18 - 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15 0 0 -19 0 47 1 30 47 73 133 -81 -18 47 20 -19 14 13 -18 16 37 -19 44 47 - 14 0 0 -18 43 27 1 30 38 74 136 -81 -18 29 58 -18 56 55 -17 59 9 -19 27 35 - 13 0 0 -18 25 30 1 30 28 74 139 -80 -18 11 59 -18 39 1 -17 41 5 -19 9 47 - 12 0 0 -18 6 57 1 30 18 74 141 -79 -17 53 23 -18 20 30 -17 22 23 -18 51 21 - 11 0 0 -17 47 46 1 30 8 75 144 -78 -17 34 9 -18 1 22 -17 3 4 -18 32 19 - 10 0 0 -17 27 58 1 29 58 75 148 -77 -17 14 18 -17 41 36 -16 43 7 -18 12 39 - 9 0 0 -17 7 32 1 29 48 75 151 -76 -16 53 50 -17 21 13 -16 22 32 -17 52 22 - 8 0 0 -16 46 29 1 29 38 75 154 -75 -16 32 44 -17 0 13 -16 1 20 -17 31 28 - 7 0 0 -16 24 48 1 29 28 75 158 -74 -16 11 1 -16 38 35 -15 39 30 -17 9 57 - 6 0 0 -16 2 30 1 29 18 75 161 -73 -15 48 39 -16 16 19 -15 17 2 -16 47 48 - 5 0 0 -15 39 33 1 29 8 75 165 -72 -15 25 40 -15 53 26 -14 53 55 -16 25 1 - 4 0 0 -15 15 59 1 28 58 75 168 -71 -15 2 2 -15 29 55 -14 30 11 -16 1 36 - 3 0 0 -14 51 46 1 28 47 75 172 -70 -14 37 47 -15 5 45 -14 5 48 -15 37 34 - 2 0 0 -14 26 56 1 28 37 74 175 -69 -14 12 53 -14 40 58 -13 40 47 -15 12 54 - 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7 47 23 - 6 43 41 - 8 21 10 13 0 0 - 6 58 15 1 25 59 64 206 -53 - 6 43 19 - 7 13 10 - 6 9 11 - 7 47 6 14 0 0 - 6 23 22 1 25 48 63 207 -52 - 6 8 22 - 6 38 21 - 5 34 6 - 7 12 25 15 0 0 - 5 47 53 1 25 38 62 208 -51 - 5 32 50 - 6 2 56 - 4 58 25 - 6 37 9 16 0 0 - 5 11 49 1 25 27 61 209 -50 - 4 56 42 - 5 26 55 - 4 22 8 - 6 1 17 17 0 0 - 4 35 10 1 25 17 60 210 -48 - 4 19 59 - 4 50 20 - 3 45 17 - 5 24 50 18 0 0 - 3 57 57 1 25 7 59 211 -47 - 3 42 42 - 4 13 11 - 3 7 51 - 4 47 49 19 0 0 - 3 20 10 1 24 56 58 211 -46 - 3 4 51 - 3 35 28 - 2 29 52 - 4 10 15 20 0 0 - 2 41 50 1 24 46 57 212 -45 - 2 26 28 - 2 57 11 - 1 51 19 - 3 32 7 21 0 0 - 2 2 58 1 24 36 56 213 -44 - 1 47 31 - 2 18 23 - 1 12 14 - 2 53 27 22 0 0 - 1 23 34 1 24 26 55 213 -43 - 1 8 4 - 1 39 2 - 0 32 38 - 2 14 15 23 0 0 - 0 43 39 1 24 16 54 214 -42 - 0 28 5 - 0 59 11 0 7 30 - 1 34 32 24 0 0 - 0 3 13 1 24 6 53 215 -40 0 12 24 - 0 18 50 0 48 7 - 0 54 18 25 0 0 0 37 41 1 23 56 52 215 -39 0 53 22 0 22 1 1 29 13 - 0 13 36 26 0 0 1 19 3 1 23 46 51 216 -38 1 34 48 1 3 20 2 10 47 0 27 35 27 0 0 2 0 53 1 23 37 50 216 -37 2 16 41 1 45 6 2 52 49 1 9 13 28 0 0 2 43 9 1 23 27 48 217 -36 2 59 0 2 27 19 3 35 16 1 51 18 29 0 0 3 25 50 1 23 18 47 217 -35 3 41 45 3 9 56 4 18 8 2 33 48 30 0 0 4 8 54 1 23 9 46 217 -33 4 24 53 3 52 58 5 1 24 3 16 42 31 0 0 4 52 22 1 22 59 45 218 -32 5 8 23 4 36 22 5 45 2 3 59 59 32 0 0 5 36 10 1 22 51 44 218 -31 5 52 15 5 20 7 6 29 1 4 43 37 33 0 0 6 20 19 1 22 42 43 219 -30 6 36 27 6 4 13 7 13 20 5 27 36 34 0 0 7 4 46 1 22 33 41 219 -29 7 20 57 6 48 37 7 57 57 6 11 54 35 0 0 7 49 31 1 22 25 40 219 -27 8 5 44 7 33 19 8 42 50 6 56 29 36 0 0 8 34 31 1 22 17 39 220 -26 8 50 47 8 18 16 9 27 59 7 41 20 37 0 0 9 19 45 1 22 9 38 220 -25 9 36 4 9 3 28 10 13 22 8 26 26 38 0 0 10 5 12 1 22 1 37 220 -24 10 21 33 9 48 52 10 58 57 9 11 44 39 0 0 10 50 49 1 21 53 35 221 -23 11 7 13 10 34 27 11 44 42 9 57 14 40 0 0 11 36 36 1 21 46 34 221 -21 11 53 2 11 20 12 12 30 36 10 42 54 41 0 0 12 22 30 1 21 39 33 221 -20 12 38 58 12 6 4 13 16 37 11 28 42 42 0 0 13 8 30 1 21 32 32 222 -19 13 25 0 12 52 2 14 2 43 12 14 36 43 0 0 13 54 34 1 21 25 31 222 -18 14 11 6 13 38 5 14 48 53 13 0 34 44 0 0 14 40 40 1 21 19 30 222 -17 14 57 13 14 24 9 15 35 4 13 46 36 45 0 0 15 26 47 1 21 13 28 223 -15 15 43 22 15 10 15 16 21 15 14 32 38 46 0 0 16 12 53 1 21 7 27 223 -14 16 29 28 15 56 19 17 7 24 15 18 40 47 0 0 16 58 55 1 21 1 26 223 -13 17 15 31 16 42 20 17 53 30 16 4 39 48 0 0 17 44 52 1 20 56 25 224 -12 18 1 29 17 28 17 18 39 30 16 50 33 49 0 0 18 30 42 1 20 50 24 224 -11 18 47 20 18 14 6 19 25 22 17 36 22 50 0 0 19 16 24 1 20 46 22 225 -9 19 33 2 18 59 48 20 11 5 18 22 2 51 0 0 20 1 56 1 20 41 21 225 -8 20 18 34 19 45 19 20 56 37 19 7 33 52 0 0 20 47 15 1 20 36 20 225 -7 21 3 53 20 30 38 21 41 57 19 52 52 53 0 0 21 32 20 1 20 32 19 226 -6 21 48 58 21 15 43 22 27 1 20 37 58 54 0 0 22 17 10 1 20 28 18 226 -5 22 33 48 22 0 33 23 11 50 21 22 48 55 0 0 23 1 42 1 20 25 16 227 -4 23 18 19 22 45 6 23 56 20 22 7 23 56 0 0 23 45 55 1 20 22 15 227 -3 24 2 32 23 29 20 24 40 31 22 51 38 57 0 0 24 29 48 1 20 18 14 227 -1 24 46 24 24 13 14 25 24 20 23 35 34 58 0 0 25 13 19 1 20 16 13 228 0 25 29 53 24 56 46 26 7 47 24 19 9 Uncertainty in time = +/- 6 secs [Prediction of 2008 Apr 25.0] Data for the target star ------------------------ * name: TYC 6856-00586-1 * constellation : Sagittarius * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 18 16 48.9958 DE: -29 51 32.953 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .030, .025 ) * V mag [mag]: 9.0 * B mag [mag]: 8.9 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (742) Edisona approx. diameter [km]: 46 approx. diameter ["]: .032 distance from Earth [AU]: 1.95600 * orbital information: orbit source: Preston date of fit: 2008 Apr 25 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 790 number of rejected observations: 73 time covered by the observations: 1913 Feb 23 - 2008 Mar 13 1 sigma uncertainty ellipse (major, minor, PA): 0.039, 0.021, 98° remarks: * orbital elements for (742) Edisona : Mean anomaly = 290.39670480 deg Arg. of pericenter = 285.87076337 deg Long. of node = 64.35357858 deg Inclination = 11.21442356 deg Eccentricity = 0.11991268 Semimajor axis = 3.01008415 AU Perihelion dist = 2.64913688 AU Mag: H = 9.47, G = 0.15 Epoch of elements : MJD 54986.06200000 TDT (2009 Jun 04.062) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Jun 4 742 Edisona 1h 29.4m UT 9.0 18 16 48.996-29 51 32.95TYC 6856-00586-1 8.9 13.9 46 4.2 1.956 -1.937 -11.31 -0.7869 -29.856 157.21 22.43 1.4907 -0.10389 0.23236 -5.60150 -2.51455 -0.00193 0.00054 2000 289.2526362009 529.00000285.870763 64.353579 11.2144240.11991268 3.0100842 2.6491369 9.6 5.00.15 RATE 1.8872790 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.049 0.032 95 2.14 0.037 0 54581.5020090604_0586-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Apr 25, 07:02 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org