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
2022-02-20 16:53:51 S 10 30 42.586 +31 10 03.68 V C57
2022-02-20 16:53:51 s 1 -88578.490 0 +352590.06 330.0 C57
2022-02-20 17:03:51 S 10 30 41.741 +31 10 15.17 V C57
2022-02-20 17:03:51 s 1 -88939.263 0 +352347.14 120.0 C57
2022-02-20 17:13:51 S 10 30 40.951 +31 10 28.27 V C57
2022-02-20 17:13:51 s 1 -89299.776 0 +352103.19 8400.0 C57
2022-02-20 17:23:51 S 10 30 40.063 +31 10 39.79 V C57
2022-02-20 17:23:51 s 1 -89660.030 0 +351858.22 5180.0 C57
2022-02-20 17:33:51 S 10 30 39.185 +31 10 50.02 V C57
2022-02-20 17:33:51 s 1 -90020.022 0 +351612.22 440.0 C57
2022-02-20 17:43:51 S 10 30 38.412 +31 11 01.72 V C57
2022-02-20 17:43:51 s 1 -90379.753 0 +351365.20 4170.0 C57
2022-02-20 17:53:51 S 10 30 37.579 +31 11 14.53 V C57
2022-02-20 17:53:51 s 1 -90739.219 0 +351117.16 6390.0 C57
2022-02-20 18:03:51 S 10 30 36.696 +31 11 25.55 V C57
2022-02-20 18:03:51 s 1 -91098.420 0 +350868.09 7070.0 C57
2022-02-20 18:13:51 S 10 30 35.875 +31 11 35.84 V C57
2022-02-20 18:13:51 s 1 -91457.355 0 +350618.00 6210.0 C57
2022-02-20 18:23:51 S 10 30 35.050 +31 11 48.80 V C57
2022-02-20 18:23:51 s 1 -91816.021 0 +350366.89 3820.0 C57
2022-02-20 18:33:51 S 10 30 34.202 +31 12 00.14 V C57
2022-02-20 18:33:51 s 1 -92174.419 0 +350114.74 9870.0 C57
2022-02-20 18:43:51 S 10 30 33.379 +31 12 10.37 V C57
2022-02-20 18:43:51 s 1 -92532.547 0 +349861.57 4360.0 C57
2022-02-20 18:53:51 S 10 30 32.544 +31 12 22.18 V C57
2022-02-20 18:53:51 s 1 -92890.402 0 +349607.38 7290.0 C57
2022-02-20 19:03:51 S 10 30 31.675 +31 12 35.10 V C57
2022-02-20 19:03:51 s 1 -93247.985 0 +349352.16 8660.0 C57
2022-02-20 19:13:51 S 10 30 30.826 +31 12 45.61 V C57
2022-02-20 19:13:51 s 1 -93605.293 0 +349095.91 8450.0 C57
2022-02-20 19:23:51 S 10 30 30.010 +31 12 56.88 V C57
2022-02-20 19:23:51 s 1 -93962.325 0 +348838.64 6670.0 C57
2022-02-20 19:33:51 S 10 30 29.208 +31 13 09.70 V C57
2022-02-20 19:33:51 s 1 -94319.080 0 +348580.34 3290.0 C57
2022-02-20 19:43:51 S 10 30 28.286 +31 13 21.65 V C57
2022-02-20 19:43:51 s 1 -94675.557 0 +348321.01 8330.0 C57
2022-02-20 19:53:51 S 10 30 27.494 +31 13 31.62 V C57
2022-02-20 19:53:51 s 1 -95031.754 0 +348060.65 1760.0 C57
2022-02-20 20:03:51 S 10 30 26.635 +31 13 43.28 V C57
2022-02-20 20:03:51 s 1 -95387.669 0 +347799.26 3600.0 C57
2022-02-20 20:13:51 S 10 30 25.790 +31 13 55.52 V C57
2022-02-20 20:13:51 s 1 -95743.302 0 +347536.85 3820.0 C57
2022-02-20 20:23:51 S 10 30 24.960 +31 14 06.61 V C57
2022-02-20 20:23:51 s 1 -96098.652 0 +347273.40 2430.0 C57
2022-02-20 20:33:51 S 10 30 24.132 +31 14 17.45 V C57
2022-02-20 20:33:51 s 1 -96453.715 0 +347008.93 9410.0 C57
2022-02-20 20:43:51 S 10 30 23.304 +31 14 30.37 V C57
2022-02-20 20:43:51 s 1 -96808.493 0 +346743.42 4770.0 C57
2022-02-20 20:53:51 S 10 30 22.466 +31 14 41.39 V C57
2022-02-20 20:53:51 s 1 -97162.982 0 +346476.89 8490.0 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)