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 05:03:51 S 10 31 41.743 +30 56 11.72 V C57
2022-02-20 05:03:51 s 1 -62381.091 0 +367241.23 6140.0 C57
2022-02-20 05:13:51 S 10 31 40.973 +30 56 24.83 V C57
2022-02-20 05:13:51 s 1 -62757.039 0 +367070.22 8350.0 C57
2022-02-20 05:23:51 S 10 31 40.104 +30 56 37.50 V C57
2022-02-20 05:23:51 s 1 -63132.814 0 +366898.19 9450.0 C57
2022-02-20 05:33:51 S 10 31 39.269 +30 56 46.93 V C57
2022-02-20 05:33:51 s 1 -63508.416 0 +366725.17 9420.0 C57
2022-02-20 05:43:51 S 10 31 38.460 +30 57 00.00 V C57
2022-02-20 05:43:51 s 1 -63883.844 0 +366551.14 8270.0 C57
2022-02-20 05:53:51 S 10 31 37.606 +30 57 12.24 V C57
2022-02-20 05:53:51 s 1 -64259.097 0 +366376.10 5990.0 C57
2022-02-20 06:03:51 S 10 31 36.763 +30 57 22.82 V C57
2022-02-20 06:03:51 s 1 -64634.172 0 +366200.06 2580.0 C57
2022-02-20 06:13:51 S 10 31 35.971 +30 57 34.63 V C57
2022-02-20 06:13:51 s 1 -65009.070 0 +366023.01 8020.0 C57
2022-02-20 06:23:51 S 10 31 35.146 +30 57 47.88 V C57
2022-02-20 06:23:51 s 1 -65383.789 0 +365844.96 2310.0 C57
2022-02-20 06:33:51 S 10 31 34.282 +30 57 59.15 V C57
2022-02-20 06:33:51 s 1 -65758.328 0 +365665.91 5450.0 C57
2022-02-20 06:43:51 S 10 31 33.497 +30 58 09.84 V C57
2022-02-20 06:43:51 s 1 -66132.686 0 +365485.84 7440.0 C57
2022-02-20 06:53:51 S 10 31 32.722 +30 58 23.59 V C57
2022-02-20 06:53:51 s 1 -66506.861 0 +365304.77 8270.0 C57
2022-02-20 07:03:51 S 10 31 31.802 +30 58 34.57 V C57
2022-02-20 07:03:51 s 1 -66880.853 0 +365122.70 7920.0 C57
2022-02-20 07:13:51 S 10 31 30.965 +30 58 45.34 V C57
2022-02-20 07:13:51 s 1 -67254.660 0 +364939.62 6410.0 C57
2022-02-20 07:23:51 S 10 31 30.168 +30 58 57.68 V C57
2022-02-20 07:23:51 s 1 -67628.281 0 +364755.53 3720.0 C57
2022-02-20 07:33:51 S 10 31 29.251 +30 59 09.20 V C57
2022-02-20 07:33:51 s 1 -68001.715 0 +364570.43 9840.0 C57
2022-02-20 07:43:51 S 10 31 28.399 +30 59 21.34 V C57
2022-02-20 07:43:51 s 1 -68374.961 0 +364384.33 4780.0 C57
2022-02-20 07:53:51 S 10 31 27.679 +30 59 31.78 V C57
2022-02-20 07:53:51 s 1 -68748.017 0 +364197.22 8530.0 C57
2022-02-20 08:03:51 S 10 31 26.873 +30 59 45.78 V C57
2022-02-20 08:03:51 s 1 -69120.883 0 +364009.10 1070.0 C57
2022-02-20 08:13:51 S 10 31 25.985 +30 59 57.05 V C57
2022-02-20 08:13:51 s 1 -69493.557 0 +363819.97 2420.0 C57
2022-02-20 08:23:51 S 10 31 25.138 +31 00 07.74 V C57
2022-02-20 08:23:51 s 1 -69866.038 0 +363629.84 2550.0 C57
2022-02-20 08:33:51 S 10 31 24.314 +31 00 21.31 V C57
2022-02-20 08:33:51 s 1 -70238.325 0 +363438.69 1470.0 C57
2022-02-20 08:43:51 S 10 31 23.462 +31 00 32.26 V C57
2022-02-20 08:43:51 s 1 -70610.417 0 +363246.54 9170.0 C57
2022-02-20 08:53:51 S 10 31 22.663 +31 00 43.27 V C57
2022-02-20 08:53:51 s 1 -70982.312 0 +363053.38 5650.0 C57
2022-02-20 09:03:51 S 10 31 21.818 +31 00 54.86 V C57
2022-02-20 09:03:51 s 1 -71354.010 0 +362859.21 890.0 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)