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
2021-12-24 09:23:54 s 1 -45088.427 0 +380173.88 6490.0 C57
2021-12-24 09:33:54 S 11 09 55.061 -02 29 25.12 V C57
2021-12-24 09:33:54 s 1 -45438.601 0 +380050.13 8690.0 C57
2021-12-24 10:03:54 S 11 09 56.146 -02 28 58.87 V C57
2021-12-24 10:03:54 s 1 -46488.428 0 +379673.07 840.0 C57
2021-12-24 10:13:54 S 11 09 56.494 -02 28 51.42 V C57
2021-12-24 10:13:54 s 1 -46838.136 0 +379545.45 60.0 C57
2021-12-24 10:23:54 S 11 09 56.813 -02 28 40.62 V C57
2021-12-24 10:23:54 s 1 -47187.725 0 +379416.87 8520.0 C57
2021-12-24 10:33:54 S 11 09 57.170 -02 28 32.66 V C57
2021-12-24 10:33:54 s 1 -47537.195 0 +379287.31 6230.0 C57
2021-12-24 10:43:54 S 11 09 57.629 -02 28 24.82 V C57
2021-12-24 10:43:54 s 1 -47886.543 0 +379156.79 3160.0 C57
2021-12-24 10:53:54 S 11 09 57.991 -02 28 15.53 V C57
2021-12-24 10:53:54 s 1 -48235.770 0 +379025.31 9340.0 C57
2021-12-24 11:03:54 S 11 09 58.346 -02 28 07.07 V C57
2021-12-24 11:03:54 s 1 -48584.873 0 +378892.86 4730.0 C57
2021-12-24 11:13:54 S 11 09 58.706 -02 27 59.47 V C57
2021-12-24 11:13:54 s 1 -48933.853 0 +378759.43 9360.0 C57
2021-12-24 11:23:54 S 11 09 59.112 -02 27 49.68 V C57
2021-12-24 11:23:54 s 1 -49282.709 0 +378625.05 3200.0 C57
2021-12-24 11:33:54 S 11 09 59.390 -02 27 41.44 V C57
2021-12-24 11:33:54 s 1 -49631.438 0 +378489.69 6250.0 C57
2021-12-24 11:43:54 S 11 09 59.808 -02 27 32.22 V C57
2021-12-24 11:43:54 s 1 -49980.041 0 +378353.36 8520.0 C57
2021-12-24 11:53:54 S 11 10 00.089 -02 27 23.83 V C57
2021-12-24 11:53:54 s 1 -50328.516 0 +378216.07 9990.0 C57
2021-12-24 12:03:54 S 11 10 00.434 -02 27 14.58 V C57
2021-12-24 12:03:54 s 1 -50676.862 0 +378077.81 660.0 C57
2021-12-24 12:13:54 S 11 10 00.806 -02 27 07.24 V C57
2021-12-24 12:13:54 s 1 -51025.079 0 +377938.58 530.0 C57
2021-12-24 12:23:54 S 11 10 01.198 -02 26 56.90 V C57
2021-12-24 12:23:54 s 1 -51373.165 0 +377798.38 9590.0 C57
2021-12-24 12:33:54 S 11 10 01.574 -02 26 48.80 V C57
2021-12-24 12:33:54 s 1 -51721.119 0 +377657.21 7850.0 C57
2021-12-24 12:43:54 S 11 10 01.874 -02 26 40.45 V C57
2021-12-24 12:43:54 s 1 -52068.940 0 +377515.07 5280.0 C57
2021-12-24 12:53:54 S 11 10 02.234 -02 26 32.21 V C57
2021-12-24 12:53:54 s 1 -52416.628 0 +377371.96 1900.0 C57
2021-12-24 13:03:54 S 11 10 02.669 -02 26 23.32 V C57
2021-12-24 13:03:54 s 1 -52764.182 0 +377227.88 7690.0 C57
2021-12-24 13:23:54 S 11 10 03.451 -02 26 06.72 V C57
2021-12-24 13:23:54 s 1 -53458.880 0 +376936.81 6780.0 C57
2021-12-24 13:33:54 S 11 10 03.746 -02 25 56.14 V C57
2021-12-24 13:33:54 s 1 -53806.023 0 +376789.82 80.0 C57
2021-12-24 13:43:54 S 11 10 04.142 -02 25 48.76 V C57
2021-12-24 13:43:54 s 1 -54153.028 0 +376641.86 2530.0 C57
2021-12-24 13:53:54 S 11 10 04.414 -02 25 40.19 V C57
2021-12-24 13:53:54 s 1 -54499.892 0 +376492.93 4130.0 C57
2021-12-24 14:03:54 S 11 10 04.824 -02 25 31.04 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)