1620 Geographos (1951 RA)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3355121545 ± 2.00e+00
Semi-major axis (a)1.2457769668 AU ± 3.00e+00
Inclination (i)13.33577542° ± 4.00e+00
Long. of Asc. Node (Ω)337.14082621° ± 5.00e+00
Arg. of Perihelion (ω)277.01835526° ± 6.00e+00
Mean Anomaly (M)212.92032873° ± 2.36e-05
Mean Motion (n)0.7088458984°/day ± 2.56e+00
Perihelion dist (q)0.82780365 AU ± 3.19e+00
Aphelion dist (Q)1.66375028 AU ± 4.72e+00
Orbital Period1.39046623 yr ± 5.02e+00
NGA Modelr2
A23.55475120e-06 AU/d²
Physical Parameters
H (abs. magnitude)15.26
G (slope)0.15
Alternative Designations

1983 CY3

Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.276″
Uncertainty0
Orbit TypeApollo
MOID0.028806 AU
Observations Used9056
Radar Obs Used5
Gaia Obs Used104
Oppositions19
Arc Total1951-2017
First Observation Used1951-08-31
Last Observation Used2026-04-08
Observations (11927)
Date Type RA Dec Mag Band Observatory
2021-12-23 06:03:54 S 12 31 33.079 +03 47 10.43 V C57
2021-12-23 06:03:54 s 1 +13195.329 0 +387500.50 6380.0 C57
2021-12-23 06:13:54 S 12 31 34.428 +03 46 58.04 V C57
2021-12-23 06:13:54 s 1 +12838.852 0 +387533.71 5630.0 C57
2021-12-23 06:23:54 S 12 31 35.626 +03 46 46.92 V C57
2021-12-23 06:23:54 s 1 +12482.340 0 +387565.97 4780.0 C57
2021-12-23 06:33:54 S 12 31 36.876 +03 46 39.43 V C57
2021-12-23 06:33:54 s 1 +12125.793 0 +387597.27 3840.0 C57
2021-12-23 07:43:54 S 12 31 45.118 +03 45 17.21 V C57
2021-12-23 07:53:54 S 12 31 46.322 +03 45 04.50 V C57
2021-12-23 08:03:54 S 12 31 47.422 +03 44 54.10 V C57
2021-12-23 08:13:54 S 12 31 48.691 +03 44 39.37 V C57
2021-12-23 08:23:54 S 12 31 49.877 +03 44 29.62 V C57
2021-12-23 08:33:54 S 12 31 51.048 +03 44 18.82 V C57
2021-12-23 08:43:54 S 12 31 52.198 +03 44 08.38 V C57
2021-12-23 08:53:54 S 12 31 53.419 +03 43 55.67 V C57
2021-12-23 09:03:54 S 12 31 54.787 +03 43 44.90 V C57
2021-12-23 09:23:54 S 12 31 56.873 +03 43 18.73 V C57
2021-12-23 09:43:54 S 12 31 59.242 +03 42 54.25 V C57
2021-12-23 10:13:54 S 12 32 02.731 +03 42 25.67 V C57
2021-12-23 10:23:54 S 12 32 04.073 +03 42 10.84 V C57
2021-12-23 10:33:54 S 12 32 05.333 +03 42 02.12 V C57
2021-12-23 10:43:54 S 12 32 06.504 +03 41 50.32 V C57
2021-12-23 10:53:54 S 12 32 07.747 +03 41 38.44 V C57
2021-12-23 11:03:54 S 12 32 08.834 +03 41 26.81 V C57
2021-12-23 11:13:54 S 12 32 10.145 +03 41 16.48 V C57
2021-12-23 11:23:54 S 12 32 11.347 +03 41 05.32 V C57
2021-12-23 11:33:54 S 12 32 12.384 +03 40 54.16 V C57
2021-12-23 11:43:54 S 12 32 13.704 +03 40 42.31 V C57
2021-12-23 12:53:54 S 12 32 21.636 +03 39 21.06 V C57
2021-12-23 13:13:54 S 12 32 24.418 +03 38 56.69 V C57
2021-12-23 13:23:54 S 12 32 25.570 +03 38 46.00 V C57
2021-12-23 13:33:54 S 12 32 26.642 +03 38 37.32 V C57
2021-12-23 13:43:54 S 12 32 27.905 +03 38 23.03 V C57
2021-12-23 13:53:54 S 12 32 29.098 +03 38 11.58 V C57
2021-12-23 14:03:54 S 12 32 30.295 +03 38 02.47 V C57
2021-12-23 14:13:54 S 12 32 31.526 +03 37 48.11 V C57
2021-12-23 14:23:54 S 12 32 32.846 +03 37 40.19 V C57
2021-12-23 14:33:54 S 12 32 33.818 +03 37 27.08 V C57
2021-12-23 14:43:54 S 12 32 34.807 +03 37 19.09 V C57
2021-12-23 15:33:54 S 12 32 41.026 +03 36 16.06 V C57
2021-12-23 15:43:54 S 12 32 42.259 +03 36 03.06 V C57
2021-12-23 15:53:54 S 12 32 43.361 +03 35 52.30 V C57
2021-12-23 16:23:54 S 12 32 47.016 +03 35 19.79 V C57
2021-12-23 16:33:54 S 12 32 48.127 +03 35 06.47 V C57
2021-12-23 16:43:54 S 12 32 49.330 +03 34 56.21 V C57
2021-12-23 16:53:54 S 12 32 50.496 +03 34 45.66 V C57
2021-12-23 16:53:54 s 1 -10009.994 0 +387672.03 6160.0 C57
2021-12-23 17:03:54 S 12 32 51.794 +03 34 36.08 V C57
2021-12-23 17:03:54 s 1 -10366.900 0 +387643.17 1380.0 C57
Radar Observations (12)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1983-02-27 05:00:00 161795 5 Hz 2380 -1 -1
1983-02-27.208333 16179500 500 Hz 2380 251 251
1983-02-28 05:04:00 142007628 30 us 2380 -1 -1
1983-02-28.211111 14200762800 30000 us 2380 251 251
1994-08-28 07:10:00 38936537.06 1.76 us 8510 -14 -14
1994-08-28 07:10:00 -364880.593 0.9 Hz 8510 -14 -14
1994-08-28.298611 3893653706 1760 us 8510 253 253
1994-08-29 04:40:00 42596456.4 1.13 us 8510 -14 -14
1994-08-29 04:40:00 -427851.027 0.2 Hz 8510 -14 -14
1994-08-29.194444 4259645640 1130 us 8510 253 253
1994-09-02 07:20:00 -615553.2 0.5 Hz 8510 -14 -14
1994-09-02.305556 -61555320 50 Hz 8510 253 253
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)