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
2001-01-26 21:40:56 C 08 48 34.46 +41 42 20.6 151
2001-01-26 21:42:45 C 08 48 34.18 +41 42 20.7 151
2001-01-26 21:44:40 C 08 48 33.90 +41 42 20.7 151
2001-02-01 19:31:54 C 08 26 07.29 +41 24 54.9 108
2001-02-01 19:37:24 C 08 26 06.32 +41 24 53.6 108
2001-02-01 19:44:04 C 08 26 05.17 +41 24 51.9 108
2001-02-01 19:49:09 C 08 26 04.34 +41 24 51.0 108
2001-02-03 02:39:51 C 08 21 00.41 +41 15 30.1 739
2001-02-03 02:42:19 C 08 21 00.02 +41 15 29.4 739
2001-02-03 02:44:32 C 08 20 59.61 +41 15 28.6 739
2001-02-04 17:48:14 C 08 14 33.45 +41 00 32.1 151
2001-02-04 17:49:18 C 08 14 33.29 +41 00 31.7 151
2001-02-04 17:50:53 C 08 14 33.02 +41 00 30.9 151
2001-02-04 17:58:52 C 08 14 31.69 +41 00 27.9 151
2001-02-04 18:01:35 C 08 14 31.24 +41 00 26.7 151
2001-02-04 18:03:23 C 08 14 30.94 +41 00 25.9 151
2001-02-09 14:03:48 C 07 55 36.57 +39 56 49.7 355
2001-02-09 14:05:29 C 07 55 36.29 +39 56 48.6 355
2001-02-09 14:11:02 C 07 55 35.36 +39 56 44.5 355
2001-02-09 14:12:21 C 07 55 35.14 +39 56 43.6 355
2001-02-11 20:07:35 C 07 47 09.96 +39 17 23.8 15.0 133
2001-02-11 20:17:38 C 07 47 08.34 +39 17 16.5 14.7 133
2001-02-11 20:26:02 C 07 47 06.97 +39 17 10.0 14.7 133
2001-02-13 05:38:30 C 07 42 04.87 +38 50 13.3 16.5 c 704
2001-02-13 05:58:07 C 07 42 01.89 +38 49 56.9 16.4 c 704
2001-02-13 06:17:42 C 07 41 58.79 +38 49 39.4 15.8 c 704
2001-02-13 06:37:20 C 07 41 55.74 +38 49 22.4 15.6 c 704
2001-02-13 06:56:55 C 07 41 52.72 +38 49 05.3 15.3 c 704
2001-02-13 19:43:32 C 07 40 00.36 +38 38 03.7 610
2001-02-13 19:48:31 C 07 39 59.60 +38 37 59.6 610
2001-02-13 19:53:31 C 07 39 58.84 +38 37 55.5 610
2001-02-13 19:58:31 C 07 39 58.08 +38 37 51.4 610
2001-02-14 03:49:34 C 07 38 49.36 +38 30 56.3 642
2001-02-14 03:55:18 C 07 38 48.48 +38 30 51.5 642
2001-02-14 04:24:00 C 07 38 44.13 +38 30 26.5 642
2001-02-14 04:28:19 C 07 38 43.48 +38 30 22.7 642
2001-02-15 18:00:32 C 07 33 21.98 +37 55 57.4 610
2001-02-15 18:05:32 C 07 33 21.26 +37 55 52.8 610
2001-02-15 18:10:33 C 07 33 20.54 +37 55 48.1 610
2001-02-15 18:15:33 C 07 33 19.81 +37 55 43.5 610
2001-02-15 18:20:32 C 07 33 19.09 +37 55 38.8 610
2001-02-15 19:55:43 C 07 33 05.38 +37 54 10.6 15.1 133
2001-02-15 20:03:52 C 07 33 04.15 +37 54 03.6 15.3 133
2001-02-15 20:12:45 C 07 33 02.91 +37 53 54.8 15.6 133
2001-02-16 04:03:05 C 07 31 57.53 +37 46 28.6 c 704
2001-02-16 04:25:12 C 07 31 54.32 +37 46 07.4 c 704
2001-02-16 04:45:33 C 07 31 51.37 +37 45 47.9 c 704
2001-02-16 05:07:19 C 07 31 48.19 +37 45 27.0 c 704
2001-02-16 05:27:30 C 07 31 45.25 +37 45 07.1 c 704
2001-02-16 19:28:18 C 07 29 50.93 +37 31 19.1 113
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)