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 17:53:54 s 1 -109914.33 2 +337411.80 1330.0 C57
2021-12-25 18:03:54 S 11 11 00.946 -02 00 46.73 V C57
2021-12-25 18:03:54 s 1 -110221.43 5 +337093.43 8970.0 C57
2021-12-25 18:13:54 S 11 11 01.210 -02 00 36.47 V C57
2021-12-25 18:13:54 s 1 -110528.19 3 +336774.02 4870.0 C57
2021-12-25 18:23:54 S 11 11 01.536 -02 00 30.38 V C57
2021-12-25 18:23:54 s 1 -110834.60 5 +336453.56 9010.0 C57
2021-12-25 18:33:54 S 11 11 01.812 -02 00 20.09 V C57
2021-12-25 18:33:54 s 1 -111140.66 9 +336132.06 1390.0 C57
2021-12-25 18:43:54 S 11 11 02.196 -02 00 10.66 V C57
2021-12-25 18:43:54 s 1 -111446.38 4 +335809.51 2000.0 C57
2021-12-25 18:53:54 S 11 11 02.455 -02 00 01.76 V C57
2021-12-25 18:53:54 s 1 -111751.74 9 +335485.91 830.0 C57
2021-12-25 19:03:54 S 11 11 02.774 -01 59 53.84 V C57
2021-12-25 19:03:54 s 1 -112056.76 2 +335161.27 7880.0 C57
2021-12-25 19:13:54 S 11 11 03.115 -01 59 43.33 V C57
2021-12-25 19:13:54 s 1 -112361.42 1 +334835.57 3140.0 C57
2021-12-25 19:23:54 S 11 11 03.348 -01 59 34.22 V C57
2021-12-25 19:23:54 s 1 -112665.72 4 +334508.83 6610.0 C57
2021-12-25 19:33:54 S 11 11 03.730 -01 59 25.66 V C57
2021-12-25 19:33:54 s 1 -112969.67 1 +334181.04 8270.0 C57
2021-12-25 19:43:54 S 11 11 04.001 -01 59 16.58 V C57
2021-12-25 19:43:54 s 1 -113273.26 0 +333852.20 8130.0 C57
2021-12-25 20:13:54 S 11 11 05.136 -01 58 49.98 V C57
2021-12-25 20:13:54 s 1 -114181.86 2 +332859.37 6760.0 C57
2021-12-25 20:23:54 S 11 11 05.326 -01 58 40.55 V C57
2021-12-25 20:23:54 s 1 -114484.00 3 +332526.32 9310.0 C57
2021-12-25 20:33:54 S 11 11 05.652 -01 58 32.63 V C57
2021-12-25 20:33:54 s 1 -114785.77 7 +332192.22 10.0 C57
2021-12-25 20:43:54 S 11 11 05.887 -01 58 23.09 V C57
2021-12-25 20:43:54 s 1 -115087.18 5 +331857.07 8860.0 C57
2021-12-25 20:53:54 S 11 11 06.197 -01 58 14.70 V C57
2021-12-25 20:53:54 s 1 -115388.22 2 +331520.86 5860.0 C57
2021-12-25 21:03:54 S 11 11 06.511 -01 58 04.80 V C57
2021-12-25 21:03:54 s 1 -115688.89 0 +331183.59 990.0 C57
2021-12-25 21:13:54 S 11 11 06.828 -01 57 56.81 V C57
2021-12-25 21:13:54 s 1 -115989.18 5 +330845.27 4250.0 C57
2021-12-25 21:23:54 S 11 11 07.162 -01 57 47.77 V C57
2021-12-25 21:23:54 s 1 -116289.10 6 +330505.89 5630.0 C57
2021-12-25 21:33:54 S 11 11 07.435 -01 57 38.38 V C57
2021-12-25 21:33:54 s 1 -116588.65 2 +330165.46 5120.0 C57
2021-12-25 21:43:54 S 11 11 07.757 -01 57 29.63 V C57
2021-12-25 21:43:54 s 1 -116887.82 0 +329823.96 2720.0 C57
2021-12-25 21:53:54 S 11 11 07.990 -01 57 19.73 V C57
2021-12-25 21:53:54 s 1 -117186.61 1 +329481.41 8420.0 C57
2021-12-25 22:03:54 S 11 11 08.424 -01 57 10.69 V C57
2021-12-25 22:03:54 s 1 -117485.02 0 +329137.80 2210.0 C57
2021-12-25 22:13:54 S 11 11 08.570 -01 57 01.30 V C57
2021-12-25 22:13:54 s 1 -117783.04 8 +328793.13 4090.0 C57
2021-12-25 22:23:54 S 11 11 08.990 -01 56 51.76 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)