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
2022-02-22 06:13:51 S 10 27 31.954 +31 51 48.85 V C57
2022-02-22 06:13:51 s 1 -160128.65 7 +271899.80 6760.0 C57
2022-02-22 06:23:51 S 10 27 31.205 +31 52 00.84 V C57
2022-02-22 06:23:51 s 1 -160391.27 8 +271417.31 8870.0 C57
2022-02-22 06:33:51 S 10 27 30.324 +31 52 11.68 V C57
2022-02-22 06:33:51 s 1 -160653.23 2 +270933.70 7630.0 C57
2022-02-22 06:43:51 S 10 27 29.359 +31 52 22.01 V C57
2022-02-22 06:43:51 s 1 -160914.51 6 +270448.96 3030.0 C57
2022-02-22 06:53:51 S 10 27 28.495 +31 52 32.02 V C57
2022-02-22 06:53:51 s 1 -161175.12 7 +269963.09 5070.0 C57
2022-02-22 07:03:51 S 10 27 27.689 +31 52 43.61 V C57
2022-02-22 07:03:51 s 1 -161435.06 3 +269476.10 3730.0 C57
2022-02-22 07:13:51 S 10 27 26.822 +31 52 54.59 V C57
2022-02-22 07:13:51 s 1 -161694.32 1 +268987.97 8990.0 C57
2022-02-22 07:23:51 S 10 27 25.973 +31 53 04.60 V C57
2022-02-22 07:23:51 s 1 -161952.89 8 +268498.72 850.0 C57
2022-02-22 07:33:51 S 10 27 25.044 +31 53 14.71 V C57
2022-02-22 07:33:51 s 1 -162210.79 2 +268008.33 9300.0 C57
2022-02-22 07:43:51 S 10 27 24.211 +31 53 26.56 V C57
2022-02-22 07:43:51 s 1 -162468.00 1 +267516.82 4320.0 C57
2022-02-22 07:53:51 S 10 27 23.398 +31 53 38.00 V C57
2022-02-22 07:53:51 s 1 -162724.52 0 +267024.18 5900.0 C57
2022-02-22 08:03:51 S 10 27 22.546 +31 53 47.44 V C57
2022-02-22 08:03:51 s 1 -162980.34 8 +266530.40 4030.0 C57
2022-02-22 08:13:51 S 10 27 21.602 +31 53 57.91 V C57
2022-02-22 08:13:51 s 1 -163235.48 3 +266035.49 8690.0 C57
2022-02-22 08:23:51 S 10 27 20.837 +31 54 09.54 V C57
2022-02-22 08:23:51 s 1 -163489.92 0 +265539.45 9880.0 C57
2022-02-22 08:33:51 S 10 27 19.939 +31 54 20.70 V C57
2022-02-22 08:33:51 s 1 -163743.65 8 +265042.28 7580.0 C57
2022-02-22 08:43:51 S 10 27 18.982 +31 54 30.67 V C57
2022-02-22 08:43:51 s 1 -163996.69 3 +264543.97 1770.0 C57
2022-02-22 08:53:51 S 10 27 18.115 +31 54 39.31 V C57
2022-02-22 08:53:51 s 1 -164249.02 3 +264044.53 2460.0 C57
2022-02-22 09:03:51 S 10 27 17.345 +31 54 51.08 V C57
2022-02-22 09:03:51 s 1 -164500.64 6 +263543.95 9610.0 C57
2022-02-22 09:13:51 S 10 27 16.519 +31 55 02.82 V C57
2022-02-22 09:13:51 s 1 -164751.55 7 +263042.24 3230.0 C57
2022-02-22 09:23:51 S 10 27 15.569 +31 55 13.58 V C57
2022-02-22 09:23:51 s 1 -165001.75 6 +262539.39 3300.0 C57
2022-02-22 09:33:51 S 10 27 14.724 +31 55 23.92 V C57
2022-02-22 09:33:51 s 1 -165251.23 8 +262035.40 9800.0 C57
2022-02-22 09:43:51 S 10 27 13.906 +31 55 35.51 V C57
2022-02-22 09:43:51 s 1 -165500.00 1 +261530.28 2720.0 C57
2022-02-22 09:53:51 S 10 27 13.018 +31 55 46.67 V C57
2022-02-22 09:53:51 s 1 -165748.04 2 +261024.02 2060.0 C57
2022-02-22 10:03:51 S 10 27 12.166 +31 55 56.28 V C57
2022-02-22 10:03:51 s 1 -165995.35 8 +260516.62 7790.0 C57
2022-02-22 10:13:51 S 10 27 11.251 +31 56 06.61 V C57
2022-02-22 10:13:51 s 1 -166241.94 6 +260008.08 9910.0 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)