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 10:23:54 s 1 -147033.40 9 + 992.160 4430.0 C57
2021-12-29 10:33:54 S 11 13 05.129 -00 34 16.61 V C57
2021-12-29 10:33:54 s 1 -146525.76 1 + 48.700 4100.0 C57
2021-12-29 10:43:54 S 11 13 05.297 -00 34 04.87 V C57
2021-12-29 10:43:54 s 1 -146012.93 4 - 894.767 1380.0 C57
2021-12-29 10:53:54 S 11 13 05.383 -00 33 53.39 V C57
2021-12-29 10:53:54 s 1 -145494.89 2 - 1838.208 6120.0 C57
2021-12-29 11:03:54 S 11 13 05.544 -00 33 42.48 V C57
2021-12-29 11:03:54 s 1 -144971.59 8 - 2781.588 8170.0 C57
2021-12-29 11:13:54 S 11 13 05.714 -00 33 31.50 V C57
2021-12-29 11:13:54 s 1 -144443.01 3 - 3724.872 7390.0 C57
2021-12-29 11:23:54 S 11 13 05.866 -00 33 21.20 V C57
2021-12-29 11:23:54 s 1 -143909.10 1 - 4668.025 3610.0 C57
2021-12-29 11:33:54 S 11 13 06.120 -00 33 10.15 V C57
2021-12-29 11:33:54 s 1 -143369.82 2 - 5611.010 6680.0 C57
2021-12-29 11:43:54 S 11 13 06.319 -00 32 59.71 V C57
2021-12-29 11:43:54 s 1 -142825.13 9 - 6553.788 6460.0 C57
2021-12-29 11:53:54 S 11 13 06.473 -00 32 48.77 V C57
2021-12-29 11:53:54 s 1 -142275.01 4 - 7496.323 2770.0 C57
2021-12-29 12:03:54 S 11 13 06.643 -00 32 38.04 V C57
2021-12-29 12:03:54 s 1 -141719.40 6 - 8438.575 5480.0 C57
2021-12-29 12:13:54 S 11 13 06.761 -00 32 26.59 V C57
2021-12-29 12:13:54 s 1 -141158.27 9 - 9380.504 4410.0 C57
2021-12-29 12:23:54 S 11 13 06.941 -00 32 15.97 V C57
2021-12-29 12:23:54 s 1 -140591.59 2 -10322.069 9420.0 C57
2021-12-29 12:33:54 S 11 13 07.140 -00 32 05.57 V C57
2021-12-29 12:33:54 s 1 -140019.30 6 -11263.230 350.0 C57
2021-12-29 12:43:54 S 11 13 07.145 -00 31 53.76 V C57
2021-12-29 12:43:54 s 1 -139441.38 2 -12203.943 7030.0 C57
2021-12-29 12:53:54 S 11 13 07.450 -00 31 41.63 V C57
2021-12-29 12:53:54 s 1 -138857.78 1 -13144.165 9320.0 C57
2021-12-29 13:03:54 S 11 13 07.584 -00 31 31.08 V C57
2021-12-29 13:03:54 s 1 -138268.46 2 -14083.851 7050.0 C57
2021-12-29 13:13:54 S 11 13 07.814 -00 31 20.24 V C57
2021-12-29 13:13:54 s 1 -137673.38 7 -15022.958 70.0 C57
2021-12-29 13:23:54 S 11 13 07.946 -00 31 09.41 V C57
2021-12-29 13:23:54 s 1 -137072.51 4 -15961.437 8210.0 C57
2021-12-29 13:33:54 S 11 13 08.076 -00 30 58.61 V C57
2021-12-29 13:33:54 s 1 -136465.80 4 -16899.244 1320.0 C57
2021-12-29 13:43:54 S 11 13 08.268 -00 30 48.42 V C57
2021-12-29 13:43:54 s 1 -135853.21 6 -17836.328 9230.0 C57
2021-12-29 13:53:54 S 11 13 08.465 -00 30 37.66 V C57
2021-12-29 13:53:54 s 1 -135234.71 1 -18772.641 1790.0 C57
2021-12-29 14:03:54 S 11 13 08.590 -00 30 25.42 V C57
2021-12-29 14:03:54 s 1 -134610.24 7 -19708.134 8840.0 C57
2021-12-29 14:13:54 S 11 13 08.784 -00 30 14.87 V C57
2021-12-29 14:13:54 s 1 -133979.78 4 -20642.754 210.0 C57
2021-12-29 14:23:54 S 11 13 08.909 -00 30 02.66 V C57
2021-12-29 14:23:54 s 1 -133343.28 2 -21576.450 5750.0 C57
2021-12-29 14:33:54 S 11 13 09.050 -00 29 51.90 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)