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
2024-04-20 03:53:01 s 1 +71469.779 0 +258956.46 4220.0 C57
2024-04-20 04:13:01 S 15 08 24.763 +25 36 28.37 V C57
2024-04-20 04:13:01 s 1 +70448.950 0 +258518.34 5090.0 C57
2024-04-20 04:53:01 S 15 08 22.154 +25 36 47.70 V C57
2024-04-20 04:53:01 s 1 +68401.455 0 +257620.11 1620.0 C57
2024-04-20 05:13:01 S 15 08 21.050 +25 36 55.66 V C57
2024-04-20 05:13:01 s 1 +67374.844 0 +257160.01 6800.0 C57
2024-04-20 05:33:01 S 15 08 19.891 +25 37 09.16 V C57
2024-04-20 05:33:01 s 1 +66346.331 0 +256692.47 6030.0 C57
2024-04-20 06:33:01 S 15 08 16.128 +25 37 39.04 V C57
2024-04-20 06:33:01 s 1 +63249.633 0 +255245.26 5350.0 C57
2024-04-20 06:53:01 S 15 08 15.070 +25 37 49.80 V C57
2024-04-20 06:53:01 s 1 +62213.737 0 +254747.86 7840.0 C57
2024-04-20 09:21:48 C 15 07 53.044 +25 42 38.99 V 703
2024-04-20 09:25:04 C 15 07 52.831 +25 42 40.86 V 703
2024-04-20 09:28:24 C 15 07 52.615 +25 42 43.06 V 703
2024-04-20 09:31:43 C 15 07 52.428 +25 42 44.86 V 703
2024-04-20 11:13:01 S 15 07 59.515 +25 40 11.03 V C57
2024-04-20 11:13:01 s 1 +48590.919 0 +247584.14 8500.0 C57
2024-04-20 11:33:01 S 15 07 58.337 +25 40 23.95 V C57
2024-04-20 11:33:01 s 1 +47531.743 0 +246978.30 3320.0 C57
2024-04-20 11:53:01 S 15 07 57.199 +25 40 33.06 V C57
2024-04-20 11:53:01 s 1 +46471.072 0 +246364.48 5510.0 C57
2024-04-20 12:13:01 S 15 07 56.206 +25 40 42.13 V C57
2024-04-20 12:13:01 s 1 +45408.938 0 +245742.69 4780.0 C57
2024-04-20 12:33:01 S 15 07 54.830 +25 40 52.72 V C57
2024-04-20 12:33:01 s 1 +44345.351 0 +245112.80 510.0 C57
2024-04-20 12:53:01 S 15 07 53.650 +25 41 03.66 V C57
2024-04-20 12:53:01 s 1 +43280.342 0 +244474.84 2410.0 C57
2024-04-20 13:53:01 S 15 07 50.030 +25 41 41.06 V C57
2024-04-20 13:53:01 s 1 +40077.057 0 +242512.19 1120.0 C57
2024-04-20 14:13:01 S 15 07 48.701 +25 41 46.03 V C57
2024-04-20 14:13:01 s 1 +39006.630 0 +241841.63 3690.0 C57
2024-04-20 14:33:01 S 15 07 47.609 +25 41 56.83 V C57
2024-04-20 14:33:01 s 1 +37934.908 0 +241162.78 220.0 C57
2024-04-20 14:53:01 S 15 07 46.524 +25 42 08.89 V C57
2024-04-20 14:53:01 s 1 +36861.924 0 +240475.66 390.0 C57
2024-04-20 15:13:01 S 15 07 45.432 +25 42 22.46 V C57
2024-04-20 15:13:01 s 1 +35787.712 0 +239780.26 3930.0 C57
2024-04-20 15:33:01 S 15 07 43.961 +25 42 29.09 V C57
2024-04-20 15:33:01 s 1 +34712.288 0 +239076.49 100.0 C57
2024-04-20 15:53:01 S 15 07 42.679 +25 42 39.67 V C57
2024-04-20 15:53:01 s 1 +33635.688 0 +238364.34 8600.0 C57
2024-04-20 16:13:01 S 15 07 41.561 +25 42 51.08 V C57
2024-04-20 16:13:01 s 1 +32557.946 0 +237643.83 9140.0 C57
2024-04-20 16:33:01 S 15 07 40.356 +25 43 00.91 V C57
2024-04-20 16:33:01 s 1 +31479.081 0 +236914.83 960.0 C57
2024-04-20 16:53:01 S 15 07 39.070 +25 43 14.23 V C57
2024-04-20 16:53:01 s 1 +30399.129 0 +236177.36 3750.0 C57
2024-04-20 17:13:01 S 15 07 37.985 +25 43 25.82 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)