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
2022-02-25 03:33:51 s 1 -155799.82 3 -25023.413 2720.0 C57
2022-02-25 03:34:37 C 10 21 47.47 +33 00 05.3 q U55
2022-02-25 03:43:23 C 10 21 46.75 +33 00 13.9 q U55
2022-02-25 03:43:51 S 10 21 30.725 +33 00 51.77 V C57
2022-02-25 03:43:51 s 1 -155273.17 2 -25890.488 8550.0 C57
2022-02-25 03:53:51 S 10 21 29.822 +33 01 00.98 V C57
2022-02-25 03:53:51 s 1 -154742.09 3 -26756.819 5050.0 C57
2022-02-25 04:03:51 S 10 21 28.999 +33 01 09.66 V C57
2022-02-25 04:03:51 s 1 -154206.56 6 -27622.376 2150.0 C57
2022-02-25 04:13:51 S 10 21 28.234 +33 01 19.24 V C57
2022-02-25 04:13:51 s 1 -153666.57 0 -28487.128 9780.0 C57
2022-02-25 04:23:51 S 10 21 27.343 +33 01 29.24 V C57
2022-02-25 04:23:51 s 1 -153122.08 6 -29351.042 7850.0 C57
2022-02-25 04:33:51 S 10 21 26.585 +33 01 37.13 V C57
2022-02-25 04:33:51 s 1 -152573.09 3 -30214.087 6280.0 C57
2022-02-25 04:43:51 S 10 21 25.649 +33 01 45.52 V C57
2022-02-25 04:43:51 s 1 -152019.57 3 -31076.230 5010.0 C57
2022-02-25 04:53:51 S 10 21 24.828 +33 01 54.95 V C57
2022-02-25 04:53:51 s 1 -151461.50 4 -31937.438 3940.0 C57
2022-02-25 05:03:51 S 10 21 23.935 +33 02 04.74 V C57
2022-02-25 05:03:51 s 1 -150898.86 8 -32797.678 3020.0 C57
2022-02-25 05:13:51 S 10 21 23.170 +33 02 14.60 V C57
2022-02-25 05:13:51 s 1 -150331.64 4 -33656.916 2170.0 C57
2022-02-25 05:23:51 S 10 21 22.318 +33 02 21.98 V C57
2022-02-25 05:23:51 s 1 -149759.81 2 -34515.118 1300.0 C57
2022-02-25 05:33:51 S 10 21 21.494 +33 02 31.56 V C57
2022-02-25 05:33:51 s 1 -149183.35 3 -35372.248 340.0 C57
2022-02-25 05:43:51 S 10 21 20.568 +33 02 40.16 V C57
2022-02-25 05:43:51 s 1 -148602.24 8 -36228.272 9220.0 C57
2022-02-25 05:53:51 S 10 21 19.874 +33 02 49.49 V C57
2022-02-25 05:53:51 s 1 -148016.47 7 -37083.153 7870.0 C57
2022-02-25 06:03:51 S 10 21 19.063 +33 02 58.49 V C57
2022-02-25 06:03:51 s 1 -147426.02 0 -37936.855 6220.0 C57
2022-02-25 06:13:51 S 10 21 18.187 +33 03 07.78 V C57
2022-02-25 06:13:51 s 1 -146830.85 8 -38789.343 4180.0 C57
2022-02-25 06:23:51 S 10 21 17.434 +33 03 16.38 V C57
2022-02-25 06:23:51 s 1 -146230.97 2 -39640.577 1690.0 C57
2022-02-25 06:33:51 S 10 21 16.517 +33 03 24.77 V C57
2022-02-25 06:33:51 s 1 -145626.34 2 -40490.521 8680.0 C57
2022-02-25 06:43:51 S 10 21 15.770 +33 03 33.98 V C57
2022-02-25 06:43:51 s 1 -145016.95 0 -41339.136 5080.0 C57
2022-02-25 06:53:51 S 10 21 14.916 +33 03 44.24 V C57
2022-02-25 06:53:51 s 1 -144402.77 7 -42186.384 820.0 C57
2022-02-25 07:03:51 S 10 21 14.071 +33 03 53.21 V C57
2022-02-25 07:03:51 s 1 -143783.80 4 -43032.225 5820.0 C57
2022-02-25 07:13:51 S 10 21 13.344 +33 04 01.38 V C57
2022-02-25 07:13:51 s 1 -143160.01 1 -43876.619 20.0 C57
2022-02-25 07:23:51 S 10 21 12.377 +33 04 09.48 V C57
2022-02-25 07:23:51 s 1 -142531.38 2 -44719.526 3360.0 C57
2022-02-25 07:25:18 C 10 21 29.80 +33 03 52.4 V G96
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)