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
2021-12-24 23:03:54 s 1 -73332.253 0 +366797.60 7900.0 C57
2021-12-24 23:13:54 S 11 10 24.070 -02 17 31.99 V C57
2021-12-24 23:13:54 s 1 -73669.641 0 +366593.81 4890.0 C57
2021-12-24 23:23:54 S 11 10 24.446 -02 17 24.04 V C57
2021-12-24 23:23:54 s 1 -74006.828 0 +366389.03 770.0 C57
2021-12-24 23:33:54 S 11 10 24.722 -02 17 14.35 V C57
2021-12-24 23:33:54 s 1 -74343.815 0 +366183.27 5530.0 C57
2021-12-24 23:43:54 S 11 10 25.046 -02 17 05.57 V C57
2021-12-24 23:43:54 s 1 -74680.599 0 +365976.51 9170.0 C57
2021-12-24 23:53:54 S 11 10 25.404 -02 16 55.88 V C57
2021-12-24 23:53:54 s 1 -75017.180 0 +365768.76 1690.0 C57
2021-12-25 00:03:54 S 11 10 25.699 -02 16 49.66 V C57
2021-12-25 00:03:54 s 1 -75353.557 0 +365560.03 3080.0 C57
2021-12-25 00:13:54 S 11 10 26.114 -02 16 39.94 V C57
2021-12-25 00:13:54 s 1 -75689.728 0 +365350.30 3330.0 C57
2021-12-25 00:23:54 S 11 10 26.376 -02 16 29.89 V C57
2021-12-25 00:23:54 s 1 -76025.693 0 +365139.58 2450.0 C57
2021-12-25 00:33:54 S 11 10 26.705 -02 16 22.44 V C57
2021-12-25 00:33:54 s 1 -76361.451 0 +364927.87 420.0 C57
2021-12-25 00:53:54 S 11 10 27.362 -02 16 04.51 V C57
2021-12-25 00:53:54 s 1 -77032.338 0 +364501.48 2910.0 C57
2021-12-25 01:03:54 S 11 10 27.732 -02 15 55.33 V C57
2021-12-25 01:03:54 s 1 -77367.465 0 +364286.79 7420.0 C57
2021-12-25 01:13:54 S 11 10 28.044 -02 15 46.48 V C57
2021-12-25 01:13:54 s 1 -77702.380 0 +364071.11 770.0 C57
2021-12-25 01:23:54 S 11 10 28.421 -02 15 37.40 V C57
2021-12-25 01:23:54 s 1 -78037.082 0 +363854.43 2950.0 C57
2021-12-25 01:33:54 S 11 10 28.798 -02 15 28.66 V C57
2021-12-25 01:33:54 s 1 -78371.569 0 +363636.77 3950.0 C57
2021-12-25 01:43:54 S 11 10 29.165 -02 15 20.66 V C57
2021-12-25 01:43:54 s 1 -78705.841 0 +363418.11 3780.0 C57
2021-12-25 01:53:54 S 11 10 29.510 -02 15 11.56 V C57
2021-12-25 01:53:54 s 1 -79039.896 0 +363198.45 2420.0 C57
2021-12-25 02:03:54 S 11 10 29.870 -02 15 02.74 V C57
2021-12-25 02:03:54 s 1 -79373.733 0 +362977.80 9870.0 C57
2021-12-25 02:13:54 S 11 10 30.146 -02 14 55.36 V C57
2021-12-25 02:13:54 s 1 -79707.350 0 +362756.15 6130.0 C57
2021-12-25 02:23:54 S 11 10 30.528 -02 14 45.35 V C57
2021-12-25 02:23:54 s 1 -80040.748 0 +362533.51 1190.0 C57
2021-12-25 02:33:54 S 11 10 30.862 -02 14 36.74 V C57
2021-12-25 02:33:54 s 1 -80373.924 0 +362309.87 5040.0 C57
2021-12-25 02:43:54 S 11 10 31.133 -02 14 29.29 V C57
2021-12-25 02:43:54 s 1 -80706.878 0 +362085.23 7690.0 C57
2021-12-25 03:03:54 S 11 10 31.764 -02 14 09.67 V C57
2021-12-25 03:03:54 s 1 -81372.112 0 +361632.97 9330.0 C57
2021-12-25 03:13:54 S 11 10 32.076 -02 14 01.82 V C57
2021-12-25 03:13:54 s 1 -81704.391 0 +361405.34 8310.0 C57
2021-12-25 03:23:54 S 11 10 32.546 -02 13 52.50 V C57
2021-12-25 03:23:54 s 1 -82036.443 0 +361176.72 6070.0 C57
2021-12-25 03:33:54 S 11 10 32.729 -02 13 43.43 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)