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
2021-12-26 21:53:54 s 1 -155323.26 6 +268706.91 7950.0 C57
2021-12-26 22:03:54 S 11 11 49.258 -01 34 59.92 V C57
2021-12-26 22:03:54 s 1 -155546.61 8 +268202.28 6780.0 C57
2021-12-26 22:13:54 S 11 11 49.524 -01 34 51.85 V C57
2021-12-26 22:13:54 s 1 -155769.27 5 +267696.46 2310.0 C57
2021-12-26 22:23:54 S 11 11 49.735 -01 34 40.62 V C57
2021-12-26 22:23:54 s 1 -155991.23 7 +267189.45 4520.0 C57
2021-12-26 22:33:54 S 11 11 49.970 -01 34 29.14 V C57
2021-12-26 22:33:54 s 1 -156212.49 9 +266681.26 3410.0 C57
2021-12-26 22:43:54 S 11 11 50.258 -01 34 21.32 V C57
2021-12-26 22:43:54 s 1 -156433.05 9 +266171.87 8960.0 C57
2021-12-26 22:53:54 S 11 11 50.556 -01 34 13.37 V C57
2021-12-26 22:53:54 s 1 -156652.91 3 +265661.30 1150.0 C57
2021-12-26 23:03:54 S 11 11 50.815 -01 34 02.28 V C57
2021-12-26 23:03:54 s 1 -156872.06 0 +265149.53 9980.0 C57
2021-12-26 23:13:54 S 11 11 51.086 -01 33 52.99 V C57
2021-12-26 23:13:54 s 1 -157090.49 5 +264636.57 5430.0 C57
2021-12-26 23:23:54 S 11 11 51.374 -01 33 43.56 V C57
2021-12-26 23:23:54 s 1 -157308.21 5 +264122.41 7480.0 C57
2021-12-26 23:33:54 S 11 11 51.588 -01 33 34.96 V C57
2021-12-26 23:33:54 s 1 -157525.21 9 +263607.06 6130.0 C57
2021-12-26 23:43:54 S 11 11 51.888 -01 33 25.31 V C57
2021-12-26 23:43:54 s 1 -157741.50 2 +263090.51 1360.0 C57
2021-12-26 23:53:54 S 11 11 52.102 -01 33 15.44 V C57
2021-12-26 23:53:54 s 1 -157957.06 2 +262572.77 3160.0 C57
2021-12-27 00:03:54 S 11 11 52.332 -01 33 06.80 V C57
2021-12-27 00:03:54 s 1 -158171.89 6 +262053.82 1510.0 C57
2021-12-27 00:13:54 S 11 11 52.687 -01 32 56.44 V C57
2021-12-27 00:13:54 s 1 -158386.00 0 +261533.68 6390.0 C57
2021-12-27 00:23:54 S 11 11 52.862 -01 32 46.32 V C57
2021-12-27 00:23:54 s 1 -158599.37 1 +261012.34 7810.0 C57
2021-12-27 00:53:54 S 11 11 53.710 -01 32 18.35 V C57
2021-12-27 00:53:54 s 1 -159235.05 8 +259441.08 1060.0 C57
2021-12-27 01:03:54 S 11 11 54.113 -01 32 10.14 V C57
2021-12-27 01:03:54 s 1 -159445.46 8 +258914.92 8440.0 C57
2021-12-27 01:13:54 S 11 11 54.115 -01 32 00.53 V C57
2021-12-27 01:13:54 s 1 -159655.12 9 +258387.56 2270.0 C57
2021-12-27 01:23:54 S 11 11 54.403 -01 31 50.30 V C57
2021-12-27 01:23:54 s 1 -159864.03 8 +257858.98 2540.0 C57
2021-12-27 01:33:54 S 11 11 54.674 -01 31 40.69 V C57
2021-12-27 01:33:54 s 1 -160072.19 3 +257329.20 9240.0 C57
2021-12-27 01:43:54 S 11 11 54.910 -01 31 31.58 V C57
2021-12-27 01:43:54 s 1 -160279.59 0 +256798.21 2360.0 C57
2021-12-27 01:53:54 S 11 11 55.200 -01 31 22.30 V C57
2021-12-27 01:53:54 s 1 -160486.22 6 +256266.00 1870.0 C57
2021-12-27 02:03:54 S 11 11 55.416 -01 31 12.86 V C57
2021-12-27 02:03:54 s 1 -160692.09 7 +255732.58 7760.0 C57
2021-12-27 02:13:54 S 11 11 55.682 -01 31 03.83 V C57
2021-12-27 02:13:54 s 1 -160897.20 0 +255197.96 30.0 C57
2021-12-27 02:23:54 S 11 11 56.009 -01 30 52.81 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)