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
2021-12-25 03:33:54 s 1 -82368.266 0 +360947.09 2590.0 C57
2021-12-25 03:43:54 S 11 10 33.108 -02 13 34.82 V C57
2021-12-25 03:43:54 s 1 -82699.859 0 +360716.47 7870.0 C57
2021-12-25 03:53:54 S 11 10 33.461 -02 13 25.36 V C57
2021-12-25 03:53:54 s 1 -83031.222 0 +360484.85 1900.0 C57
2021-12-25 04:03:54 S 11 10 33.826 -02 13 16.39 V C57
2021-12-25 04:03:54 s 1 -83362.353 0 +360252.22 4690.0 C57
2021-12-25 04:13:54 S 11 10 34.087 -02 13 08.18 V C57
2021-12-25 04:13:54 s 1 -83693.251 0 +360018.60 6220.0 C57
2021-12-25 04:23:54 S 11 10 34.495 -02 12 58.86 V C57
2021-12-25 04:23:54 s 1 -84023.914 0 +359783.97 6480.0 C57
2021-12-25 04:33:54 S 11 10 34.798 -02 12 50.94 V C57
2021-12-25 04:33:54 s 1 -84354.342 0 +359548.35 5480.0 C57
2021-12-25 04:43:54 S 11 10 35.174 -02 12 41.47 V C57
2021-12-25 04:43:54 s 1 -84684.533 0 +359311.72 3210.0 C57
2021-12-25 04:53:54 S 11 10 35.578 -02 12 33.59 V C57
2021-12-25 04:53:54 s 1 -85014.486 0 +359074.09 9660.0 C57
2021-12-25 05:03:54 S 11 10 35.868 -02 12 24.12 V C57
2021-12-25 05:03:54 s 1 -85344.201 0 +358835.46 4830.0 C57
2021-12-25 05:13:54 S 11 10 36.139 -02 12 15.88 V C57
2021-12-25 05:13:54 s 1 -85673.674 0 +358595.82 8720.0 C57
2021-12-25 05:23:54 S 11 10 36.576 -02 12 06.16 V C57
2021-12-25 05:23:54 s 1 -86002.907 0 +358355.18 1310.0 C57
2021-12-25 05:33:54 S 11 10 36.871 -02 11 58.49 V C57
2021-12-25 05:33:54 s 1 -86331.896 0 +358113.54 2600.0 C57
2021-12-25 05:43:54 S 11 10 37.193 -02 11 48.66 V C57
2021-12-25 05:43:54 s 1 -86660.642 0 +357870.89 2580.0 C57
2021-12-25 05:53:54 S 11 10 37.447 -02 11 39.30 V C57
2021-12-25 05:53:54 s 1 -86989.142 0 +357627.24 1260.0 C57
2021-12-25 06:03:54 S 11 10 37.781 -02 11 30.08 V C57
2021-12-25 06:03:54 s 1 -87317.397 0 +357382.58 8630.0 C57
2021-12-25 06:53:54 S 11 10 39.456 -02 10 45.84 V C57
2021-12-25 06:53:54 s 1 -88954.929 0 +356144.20 5540.0 C57
2021-12-25 07:03:54 S 11 10 39.758 -02 10 36.23 V C57
2021-12-25 07:03:54 s 1 -89281.679 0 +355893.50 4910.0 C57
2021-12-25 07:13:54 S 11 10 40.073 -02 10 28.70 V C57
2021-12-25 07:13:54 s 1 -89608.175 0 +355641.79 2920.0 C57
2021-12-25 07:23:54 S 11 10 40.421 -02 10 18.95 V C57
2021-12-25 07:23:54 s 1 -89934.414 0 +355389.08 9580.0 C57
2021-12-25 07:33:54 S 11 10 40.781 -02 10 11.03 V C57
2021-12-25 07:33:54 s 1 -90260.396 0 +355135.35 4870.0 C57
2021-12-25 07:43:54 S 11 10 41.170 -02 10 01.92 V C57
2021-12-25 07:43:54 s 1 -90586.118 0 +354880.62 8790.0 C57
2021-12-25 07:53:54 S 11 10 41.443 -02 09 52.85 V C57
2021-12-25 07:53:54 s 1 -90911.582 0 +354624.87 1340.0 C57
2021-12-25 08:03:54 S 11 10 41.904 -02 09 43.38 V C57
2021-12-25 08:03:54 s 1 -91236.783 0 +354368.11 2510.0 C57
2021-12-25 08:13:54 S 11 10 42.096 -02 09 36.40 V C57
2021-12-25 08:13:54 s 1 -91561.723 0 +354110.35 2300.0 C57
2021-12-25 08:23:54 S 11 10 42.494 -02 09 25.49 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)