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
2022-02-24 23:33:51 S 10 21 51.703 +32 57 04.79 V C57
2022-02-24 23:33:51 s 1 -167163.16 6 - 4063.363 640.0 C57
2022-02-24 23:43:51 S 10 21 50.866 +32 57 12.64 V C57
2022-02-24 23:43:51 s 1 -166736.78 0 - 4940.099 6560.0 C57
2022-02-24 23:53:51 S 10 21 49.949 +32 57 22.79 V C57
2022-02-24 23:53:51 s 1 -166306.44 4 - 5816.713 5050.0 C57
2022-02-25 00:03:51 S 10 21 49.250 +32 57 32.29 V C57
2022-02-25 00:03:51 s 1 -165872.13 9 - 6693.182 6030.0 C57
2022-02-25 00:13:51 S 10 21 48.348 +32 57 41.69 V C57
2022-02-25 00:13:51 s 1 -165433.84 6 - 7569.484 9430.0 C57
2022-02-25 00:23:51 S 10 21 47.458 +32 57 50.29 V C57
2022-02-25 00:23:51 s 1 -164991.54 5 - 8445.597 5170.0 C57
2022-02-25 00:33:51 S 10 21 46.651 +32 57 59.11 V C57
2022-02-25 00:33:51 s 1 -164545.21 6 - 9321.498 3170.0 C57
2022-02-25 00:43:51 S 10 21 45.763 +32 58 08.54 V C57
2022-02-25 00:43:51 s 1 -164094.84 0 -10197.164 3340.0 C57
2022-02-25 00:53:51 S 10 21 44.988 +32 58 18.55 V C57
2022-02-25 00:53:51 s 1 -163640.39 6 -11072.571 5620.0 C57
2022-02-25 01:03:51 S 10 21 44.141 +32 58 26.65 V C57
2022-02-25 01:03:51 s 1 -163181.86 5 -11947.696 9910.0 C57
2022-02-25 01:13:51 S 10 21 43.270 +32 58 36.59 V C57
2022-02-25 01:13:51 s 1 -162719.22 7 -12822.515 6150.0 C57
2022-02-25 01:23:51 S 10 21 42.420 +32 58 44.40 V C57
2022-02-25 01:23:51 s 1 -162252.46 1 -13697.002 4240.0 C57
2022-02-25 01:33:51 S 10 21 41.618 +32 58 53.87 V C57
2022-02-25 01:33:51 s 1 -161781.54 9 -14571.134 4120.0 C57
2022-02-25 01:43:51 S 10 21 40.750 +32 59 03.95 V C57
2022-02-25 01:43:51 s 1 -161306.46 9 -15444.884 5700.0 C57
2022-02-25 01:53:51 S 10 21 39.962 +32 59 12.77 V C57
2022-02-25 01:53:51 s 1 -160827.20 2 -16318.229 8900.0 C57
2022-02-25 02:03:51 S 10 21 39.050 +32 59 21.37 V C57
2022-02-25 02:03:51 s 1 -160343.72 8 -17191.140 3650.0 C57
2022-02-25 02:13:51 S 10 21 38.196 +32 59 31.06 V C57
2022-02-25 02:13:51 s 1 -159856.02 7 -18063.593 9850.0 C57
2022-02-25 02:23:51 S 10 21 37.409 +32 59 39.80 V C57
2022-02-25 02:23:51 s 1 -159364.07 8 -18935.560 7450.0 C57
2022-02-25 02:33:51 S 10 21 36.590 +32 59 52.15 V C57
2022-02-25 02:33:51 s 1 -158867.86 2 -19807.015 6350.0 C57
2022-02-25 02:43:51 S 10 21 36.007 +33 00 01.30 V C57
2022-02-25 02:43:51 s 1 -158367.35 8 -20677.930 6470.0 C57
2022-02-25 02:53:51 S 10 21 35.198 +33 00 07.85 V C57
2022-02-25 02:53:51 s 1 -157862.54 7 -21548.277 7740.0 C57
2022-02-25 03:03:51 S 10 21 34.020 +33 00 15.84 V C57
2022-02-25 03:03:51 s 1 -157353.40 8 -22418.027 80.0 C57
2022-02-25 03:13:51 S 10 21 33.278 +33 00 24.08 V C57
2022-02-25 03:13:51 s 1 -156839.92 1 -23287.153 3410.0 C57
2022-02-25 03:23:51 S 10 21 32.364 +33 00 34.74 V C57
2022-02-25 03:23:51 s 1 -156322.06 6 -24155.625 7650.0 C57
2022-02-25 03:25:38 C 10 21 48.12 +32 59 56.7 q U55
2022-02-25 03:33:51 S 10 21 31.519 +33 00 42.98 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)