3103 Eger (1982 BB)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3541833241 ± 2.00e+00
Semi-major axis (a)1.4039472551 AU ± 3.00e+00
Inclination (i)20.93071887° ± 4.00e+00
Long. of Asc. Node (Ω)129.73173744° ± 5.00e+00
Arg. of Perihelion (ω)254.10494834° ± 6.00e+00
Mean Anomaly (M)181.12184640° ± 8.33e-05
Mean Motion (n)0.5924969077°/day ± 1.90e+00
Perihelion dist (q)0.90669255 AU ± 3.41e+00
Aphelion dist (Q)1.90120196 AU ± 4.94e+00
Orbital Period1.66351296 yr ± 5.33e+00
NGA Modelr2
A24.86502687e-06 AU/d²
Physical Parameters
H (abs. magnitude)15.30
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.341″
Uncertainty0
Orbit TypeApollo
MOID0.078006 AU
Observations Used7901
Radar Obs Used4
Gaia Obs Used108
Oppositions14
Arc Total1982-2017
First Observation Used1982-02-02
Last Observation Used2026-04-05
Observations (11858)
Date Type RA Dec Mag Band Observatory
2021-12-29 14:33:54 s 1 -132700.69 9 -22509.169 5290.0 C57
2021-12-29 14:43:54 S 11 13 09.266 -00 29 40.88 V C57
2021-12-29 14:43:54 s 1 -132051.99 5 -23440.855 8680.0 C57
2021-12-29 14:53:54 S 11 13 09.394 -00 29 30.95 V C57
2021-12-29 14:53:54 s 1 -131397.12 9 -24371.453 5760.0 C57
2021-12-29 15:03:54 S 11 13 09.586 -00 29 18.92 V C57
2021-12-29 15:03:54 s 1 -130736.06 1 -25300.907 6360.0 C57
2021-12-29 15:13:54 S 11 13 09.703 -00 29 09.06 V C57
2021-12-29 15:13:54 s 1 -130068.74 9 -26229.159 330.0 C57
2021-12-29 15:33:54 S 11 13 10.186 -00 28 46.70 V C57
2021-12-29 15:33:54 s 1 -128715.23 0 -28081.819 7720.0 C57
2021-12-29 15:43:54 S 11 13 10.385 -00 28 34.97 V C57
2021-12-29 15:43:54 s 1 -128028.94 1 -29006.106 840.0 C57
2021-12-29 15:53:54 S 11 13 10.452 -00 28 24.13 V C57
2021-12-29 15:53:54 s 1 -127336.24 5 -29928.948 6680.0 C57
2021-12-29 16:03:54 S 11 13 10.603 -00 28 12.90 V C57
2021-12-29 16:03:54 s 1 -126637.10 1 -30850.280 5110.0 C57
2021-12-29 16:13:54 S 11 13 10.778 -00 28 00.88 V C57
2021-12-29 16:13:54 s 1 -125931.46 9 -31770.037 5950.0 C57
2021-12-29 16:23:54 S 11 13 10.949 -00 27 50.26 V C57
2021-12-29 16:23:54 s 1 -125219.30 7 -32688.153 9050.0 C57
2021-12-29 16:33:54 S 11 13 11.129 -00 27 38.70 V C57
2021-12-29 16:33:54 s 1 -124500.57 6 -33604.561 4270.0 C57
2021-12-29 16:43:54 S 11 13 11.330 -00 27 28.01 V C57
2021-12-29 16:43:54 s 1 -123775.23 5 -34519.191 1440.0 C57
2021-12-29 16:53:54 S 11 13 11.558 -00 27 16.45 V C57
2021-12-29 16:53:54 s 1 -123043.24 3 -35431.972 410.0 C57
2021-12-29 17:03:54 S 11 13 11.731 -00 27 06.30 V C57
2021-12-29 17:03:54 s 1 -122304.56 2 -36342.832 1040.0 C57
2021-12-29 17:13:54 S 11 13 11.897 -00 26 55.50 V C57
2021-12-29 17:13:54 s 1 -121559.15 0 -37251.699 3170.0 C57
2021-12-29 17:23:54 S 11 13 12.034 -00 26 43.62 V C57
2021-12-29 17:23:54 s 1 -120806.96 9 -38158.498 6650.0 C57
2021-12-29 17:33:54 S 11 13 12.154 -00 26 32.57 V C57
2021-12-29 17:33:54 s 1 -120047.97 9 -39063.152 1340.0 C57
2021-12-29 17:43:54 S 11 13 12.377 -00 26 20.90 V C57
2021-12-29 17:43:54 s 1 -119282.14 1 -39965.584 7080.0 C57
2021-12-29 17:53:54 S 11 13 12.466 -00 26 10.79 V C57
2021-12-29 17:53:54 s 1 -118509.41 7 -40865.714 3750.0 C57
2021-12-29 18:03:54 S 11 13 12.677 -00 25 57.94 V C57
2021-12-29 18:03:54 s 1 -117729.76 7 -41763.462 1190.0 C57
2021-12-29 18:13:54 S 11 13 12.842 -00 25 46.74 V C57
2021-12-29 18:13:54 s 1 -116943.15 4 -42658.746 9270.0 C57
2021-12-29 18:23:54 S 11 13 13.078 -00 25 35.04 V C57
2021-12-29 18:23:54 s 1 -116149.54 1 -43551.483 7840.0 C57
2021-12-29 18:33:54 S 11 13 13.255 -00 25 24.71 V C57
2021-12-29 18:33:54 s 1 -115348.88 9 -44441.586 6780.0 C57
2021-12-29 18:43:54 S 11 13 13.450 -00 25 13.15 V C57
2021-12-29 18:43:54 s 1 -114541.16 3 -45328.969 5950.0 C57
2021-12-29 18:53:54 S 11 13 13.601 -00 25 03.18 V C57
Radar Observations (8)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1986-07-18 07:50:00 202602 6 Hz 2380 -1 -1
1986-07-18.326389 20260200 600 Hz 2380 251 251
1996-07-29 09:10:00 469654 5 Hz 8510 -14 -14
1996-07-29 13:00:00 133166634 10 us 8510 -14 -14
1996-07-29.381944 46965400 500 Hz 8510 253 253
1996-07-29.541667 13316663400 10000 us 8510 253 253
1996-07-30 10:50:00 410012.2 5 Hz 8510 -14 -14
1996-07-30.451389 41001220 500 Hz 8510 253 253
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)