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
2021-12-19 10:13:54 s 1 +171711.70 5 +212923.85 7580.0 C57
2021-12-19 10:23:54 S 11 04 26.105 -04 04 55.52 V C57
2021-12-19 10:23:54 s 1 +171581.08 3 +213560.31 3390.0 C57
2021-12-19 10:33:54 S 11 04 26.558 -04 04 47.96 V C57
2021-12-19 10:33:54 s 1 +171449.34 7 +214195.40 4910.0 C57
2021-12-19 10:43:54 S 11 04 27.178 -04 04 40.48 V C57
2021-12-19 10:43:54 s 1 +171316.50 3 +214829.12 2170.0 C57
2021-12-19 10:53:54 S 11 04 27.641 -04 04 33.71 V C57
2021-12-19 10:53:54 s 1 +171182.55 6 +215461.47 5180.0 C57
2021-12-19 11:03:54 S 11 04 28.289 -04 04 23.70 V C57
2021-12-19 11:03:54 s 1 +171047.51 2 +216092.46 3980.0 C57
2021-12-19 11:13:54 S 11 04 28.867 -04 04 16.93 V C57
2021-12-19 11:13:54 s 1 +170911.37 5 +216722.08 8560.0 C57
2021-12-19 11:23:54 S 11 04 29.448 -04 04 09.37 V C57
2021-12-19 11:23:54 s 1 +170774.15 1 +217350.33 8970.0 C57
2021-12-19 11:33:54 S 11 04 29.988 -04 04 01.88 V C57
2021-12-19 11:33:54 s 1 +170635.84 5 +217977.23 5220.0 C57
2021-12-19 11:43:54 S 11 04 30.487 -04 03 53.78 V C57
2021-12-19 11:43:54 s 1 +170496.46 2 +218602.76 7330.0 C57
2021-12-19 11:53:54 S 11 04 31.123 -04 03 45.65 V C57
2021-12-19 11:53:54 s 1 +170356.00 7 +219226.93 5330.0 C57
2021-12-19 12:03:54 S 11 04 31.730 -04 03 39.31 V C57
2021-12-19 12:03:54 s 1 +170214.48 6 +219849.75 9220.0 C57
2021-12-19 12:13:54 S 11 04 32.294 -04 03 32.54 V C57
2021-12-19 12:13:54 s 1 +170071.90 3 +220471.21 9040.0 C57
2021-12-19 12:23:54 S 11 04 32.892 -04 03 25.52 V C57
2021-12-19 12:23:54 s 1 +169928.26 3 +221091.31 4800.0 C57
2021-12-19 12:33:54 S 11 04 33.290 -04 03 15.91 V C57
2021-12-19 12:33:54 s 1 +169783.57 2 +221710.07 6520.0 C57
2021-12-19 12:43:54 S 11 04 33.924 -04 03 09.07 V C57
2021-12-19 12:43:54 s 1 +169637.83 4 +222327.47 4230.0 C57
2021-12-19 12:53:54 S 11 04 34.430 -04 03 00.14 V C57
2021-12-19 12:53:54 s 1 +169491.05 5 +222943.52 7940.0 C57
2021-12-19 13:03:54 S 11 04 35.014 -04 02 52.66 V C57
2021-12-19 13:03:54 s 1 +169343.23 9 +223558.22 7670.0 C57
2021-12-19 13:13:54 S 11 04 35.594 -04 02 45.46 V C57
2021-12-19 13:13:54 s 1 +169194.39 1 +224171.58 3450.0 C57
2021-12-19 13:23:54 S 11 04 36.029 -04 02 39.12 V C57
2021-12-19 13:23:54 s 1 +169044.51 6 +224783.59 5290.0 C57
2021-12-19 13:33:54 S 11 04 36.746 -04 02 31.85 V C57
2021-12-19 13:33:54 s 1 +168893.61 8 +225394.25 3210.0 C57
2021-12-19 13:43:54 S 11 04 37.243 -04 02 24.29 V C57
2021-12-19 13:43:54 s 1 +168741.70 3 +226003.58 7230.0 C57
2021-12-19 13:53:54 S 11 04 37.826 -04 02 14.68 V C57
2021-12-19 13:53:54 s 1 +168588.77 5 +226611.56 7370.0 C57
2021-12-19 14:03:54 S 11 04 38.333 -04 02 07.91 V C57
2021-12-19 14:03:54 s 1 +168434.84 0 +227218.21 3640.0 C57
2021-12-19 14:13:54 S 11 04 38.906 -04 02 01.68 V C57
2021-12-19 14:13:54 s 1 +168279.90 1 +227823.51 6080.0 C57
2021-12-19 14:23:54 S 11 04 39.497 -04 01 53.44 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)