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
2022-02-22 18:03:51 S 10 26 30.533 +32 04 25.36 V C57
2022-02-22 18:03:51 s 1 -176955.11 1 +234811.93 1380.0 C57
2022-02-22 18:13:51 S 10 26 29.676 +32 04 35.00 V C57
2022-02-22 18:13:51 s 1 -177163.15 0 +234248.08 3710.0 C57
2022-02-22 18:23:51 S 10 26 28.834 +32 04 45.55 V C57
2022-02-22 18:23:51 s 1 -177370.30 5 +233683.06 1720.0 C57
2022-02-22 18:33:51 S 10 26 28.022 +32 04 56.03 V C57
2022-02-22 18:33:51 s 1 -177576.57 3 +233116.88 5400.0 C57
2022-02-22 18:43:51 S 10 26 27.106 +32 05 06.90 V C57
2022-02-22 18:43:51 s 1 -177781.94 9 +232549.53 4730.0 C57
2022-02-22 18:53:51 S 10 26 26.232 +32 05 17.66 V C57
2022-02-22 18:53:51 s 1 -177986.43 0 +231981.01 9690.0 C57
2022-02-22 19:03:51 S 10 26 25.339 +32 05 27.38 V C57
2022-02-22 19:03:51 s 1 -178190.01 2 +231411.33 270.0 C57
2022-02-22 19:13:51 S 10 26 24.468 +32 05 37.68 V C57
2022-02-22 19:13:51 s 1 -178392.69 2 +230840.47 6450.0 C57
2022-02-22 19:23:51 S 10 26 23.626 +32 05 49.13 V C57
2022-02-22 19:23:51 s 1 -178594.46 6 +230268.45 8220.0 C57
2022-02-22 19:33:51 S 10 26 22.819 +32 05 59.32 V C57
2022-02-22 19:33:51 s 1 -178795.33 1 +229695.26 5550.0 C57
2022-02-22 19:43:51 S 10 26 21.854 +32 06 09.11 V C57
2022-02-22 19:43:51 s 1 -178995.28 2 +229120.90 8440.0 C57
2022-02-22 19:53:51 S 10 26 20.981 +32 06 22.54 V C57
2022-02-22 19:53:51 s 1 -179194.31 6 +228545.37 6860.0 C57
2022-02-22 20:03:51 S 10 26 20.148 +32 06 29.88 V C57
2022-02-22 20:03:51 s 1 -179392.43 0 +227968.67 810.0 C57
2022-02-22 20:23:51 S 10 26 18.442 +32 06 51.95 V C57
2022-02-22 20:23:51 s 1 -179785.88 0 +226811.76 5180.0 C57
2022-02-22 20:33:51 S 10 26 17.544 +32 07 01.02 V C57
2022-02-22 20:33:51 s 1 -179981.20 8 +226231.55 5580.0 C57
2022-02-22 20:43:51 S 10 26 16.661 +32 07 13.33 V C57
2022-02-22 20:43:51 s 1 -180175.60 2 +225650.16 1430.0 C57
2022-02-22 20:53:51 S 10 26 15.862 +32 07 24.67 V C57
2022-02-22 20:53:51 s 1 -180369.05 5 +225067.60 2710.0 C57
2022-02-22 21:03:51 S 10 26 14.969 +32 07 33.64 V C57
2022-02-22 21:03:51 s 1 -180561.56 5 +224483.87 9420.0 C57
2022-02-22 21:13:51 S 10 26 13.999 +32 07 43.18 V C57
2022-02-22 21:13:51 s 1 -180753.12 8 +223898.97 1520.0 C57
2022-02-22 21:23:51 S 10 26 13.152 +32 07 53.87 V C57
2022-02-22 21:23:51 s 1 -180943.74 0 +223312.89 9010.0 C57
2022-02-22 21:33:51 S 10 26 12.401 +32 08 04.81 V C57
2022-02-22 21:33:51 s 1 -181133.39 7 +222725.63 1860.0 C57
2022-02-22 21:43:51 S 10 26 11.460 +32 08 14.71 V C57
2022-02-22 21:43:51 s 1 -181322.09 5 +222137.20 60.0 C57
2022-02-22 21:53:51 S 10 26 10.498 +32 08 24.86 V C57
2022-02-22 21:53:51 s 1 -181509.83 0 +221547.60 3590.0 C57
2022-02-22 22:03:51 S 10 26 09.686 +32 08 35.16 V C57
2022-02-22 22:03:51 s 1 -181696.59 9 +220956.82 2440.0 C57
2022-02-22 22:13:51 S 10 26 08.870 +32 08 47.26 V C57
2022-02-22 22:13:51 s 1 -181882.39 7 +220364.86 6580.0 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)