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
2021-12-20 13:03:54 s 1 +139269.49 0 +298722.59 160.0 C57
2021-12-20 13:13:54 S 11 05 52.704 -03 44 25.87 V C57
2021-12-20 13:13:54 s 1 +139011.24 4 +299156.44 3940.0 C57
2021-12-20 13:23:54 S 11 05 53.227 -03 44 18.53 V C57
2021-12-20 13:23:54 s 1 +138752.45 0 +299589.14 5720.0 C57
2021-12-20 13:33:54 S 11 05 53.674 -03 44 10.07 V C57
2021-12-20 13:33:54 s 1 +138493.10 9 +300020.68 5490.0 C57
2021-12-20 13:43:54 S 11 05 54.257 -03 44 00.46 V C57
2021-12-20 13:43:54 s 1 +138233.22 4 +300451.07 3270.0 C57
2021-12-20 13:53:54 S 11 05 54.653 -03 43 55.49 V C57
2021-12-20 13:53:54 s 1 +137972.79 7 +300880.30 9070.0 C57
2021-12-20 14:03:54 S 11 05 55.183 -03 43 47.46 V C57
2021-12-20 14:03:54 s 1 +137711.83 1 +301308.38 2890.0 C57
2021-12-20 14:13:54 S 11 05 55.795 -03 43 39.68 V C57
2021-12-20 14:13:54 s 1 +137450.32 7 +301735.30 4750.0 C57
2021-12-20 14:23:54 S 11 05 56.196 -03 43 31.87 V C57
2021-12-20 14:23:54 s 1 +137188.28 8 +302161.07 4650.0 C57
2021-12-20 14:53:54 S 11 05 57.871 -03 43 09.52 V C57
2021-12-20 14:53:54 s 1 +136398.98 3 +303431.49 2700.0 C57
2021-12-20 15:03:54 S 11 05 58.296 -03 43 00.26 V C57
2021-12-20 15:03:54 s 1 +136134.82 5 +303852.66 4860.0 C57
2021-12-20 15:13:54 S 11 05 58.812 -03 42 52.67 V C57
2021-12-20 15:13:54 s 1 +135870.14 4 +304272.69 5120.0 C57
2021-12-20 15:23:54 S 11 05 59.345 -03 42 44.24 V C57
2021-12-20 15:23:54 s 1 +135604.94 1 +304691.57 3460.0 C57
2021-12-20 15:33:54 S 11 05 59.822 -03 42 37.69 V C57
2021-12-20 15:33:54 s 1 +135339.21 7 +305109.31 9910.0 C57
2021-12-20 15:43:54 S 11 06 00.305 -03 42 29.05 V C57
2021-12-20 15:43:54 s 1 +135072.97 7 +305525.90 4480.0 C57
2021-12-20 15:53:54 S 11 06 00.818 -03 42 22.36 V C57
2021-12-20 15:53:54 s 1 +134806.22 0 +305941.35 7170.0 C57
2021-12-20 16:03:54 S 11 06 01.332 -03 42 15.16 V C57
2021-12-20 16:03:54 s 1 +134538.95 0 +306355.66 7990.0 C57
2021-12-20 16:13:54 S 11 06 01.812 -03 42 06.08 V C57
2021-12-20 16:13:54 s 1 +134271.17 0 +306768.83 6950.0 C57
2021-12-20 16:23:54 S 11 06 02.354 -03 41 59.10 V C57
2021-12-20 16:23:54 s 1 +134002.87 9 +307180.86 4060.0 C57
2021-12-20 16:33:54 S 11 06 02.842 -03 41 51.29 V C57
2021-12-20 16:33:54 s 1 +133734.08 2 +307591.75 9320.0 C57
2021-12-20 16:43:54 S 11 06 03.358 -03 41 41.75 V C57
2021-12-20 16:43:54 s 1 +133464.78 0 +308001.50 2750.0 C57
2021-12-20 16:53:54 S 11 06 03.914 -03 41 36.49 V C57
2021-12-20 16:53:54 s 1 +133194.97 5 +308410.12 4350.0 C57
2021-12-20 17:03:54 S 11 06 04.428 -03 41 28.00 V C57
2021-12-20 17:03:54 s 1 +132924.67 0 +308817.60 4140.0 C57
2021-12-20 17:13:54 S 11 06 04.982 -03 41 20.08 V C57
2021-12-20 17:13:54 s 1 +132653.86 5 +309223.94 2110.0 C57
2021-12-20 17:23:54 S 11 06 05.510 -03 41 11.98 V C57
2021-12-20 17:23:54 s 1 +132382.56 4 +309629.15 8290.0 C57
2021-12-20 17:33:54 S 11 06 05.873 -03 41 04.92 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)