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
2008-01-21 08:07:05 C 11 15 50.97 +23 43 30.7 r H45
2008-01-21 08:09:07 C 11 15 50.97 +23 43 30.4 r H45
2008-01-21 08:19:59 C 11 15 50.93 +23 43 28.7 r H45
2008-01-21 08:26:11 C 11 15 50.91 +23 43 27.8 r H45
2008-02-02 22:10:31 C 11 09 42.11 +22 40 35.5 o A32
2008-02-02 22:18:32 C 11 09 41.71 +22 40 33.4 o A32
2008-02-02 22:25:42 C 11 09 41.36 +22 40 31.5 o A32
2008-02-03 07:06:04 C 11 09 17.06 +22 38 11.7 r 703
2008-02-03 07:16:30 C 11 09 16.48 +22 38 08.9 r 703
2008-02-03 07:26:53 C 11 09 15.94 +22 38 06.1 r 703
2008-02-03 07:37:13 C 11 09 15.37 +22 38 03.3 r 703
2008-02-08 08:01:12 C 11 01 52.36 +21 56 08.5 c 704
2008-02-08 08:18:47 C 11 01 50.91 +21 56 01.5 c 704
2008-02-08 08:36:42 C 11 01 49.24 +21 55 53.8 c 704
2008-02-08 08:54:16 C 11 01 47.94 +21 55 46.4 c 704
2008-02-08 09:11:52 C 11 01 46.46 +21 55 39.1 c 704
2008-02-11 09:57:56 C 10 55 33.81 +21 21 17.9 r H45
2008-02-11 09:59:36 C 10 55 33.66 +21 21 17.0 r H45
2008-02-11 10:01:13 C 10 55 33.47 +21 21 16.1 r H45
2008-02-11 10:03:19 C 10 55 33.26 +21 21 15.0 r H45
2008-02-11 10:04:49 C 10 55 33.11 +21 21 14.2 r H45
2008-02-12 23:51:16 C 10 51 46.91 +20 59 46.5 d 048
2008-02-12 23:51:50 C 10 51 46.85 +20 59 46.3 d 048
2008-02-12 23:53:01 C 10 51 46.71 +20 59 45.7 d 048
2008-02-12 23:53:37 C 10 51 46.67 +20 59 45.4 d 048
2008-02-12 23:55:21 C 10 51 46.45 +20 59 44.1 d 048
2008-02-13 05:54:44 C 10 51 09.28 +20 56 12.7 r 703
2008-02-13 06:05:34 C 10 51 08.02 +20 56 06.3 r 703
2008-02-13 06:16:26 C 10 51 06.80 +20 56 00.0 r 703
2008-02-13 06:27:19 C 10 51 05.54 +20 55 53.6 r 703
2008-02-15 23:20:51 C 10 43 26.29 +20 11 09.0 r A06
2008-02-15 23:26:32 C 10 43 25.53 +20 11 04.8 r A06
2008-02-15 23:31:41 C 10 43 24.83 +20 11 01.0 r A06
2008-02-16 03:28:52 C 10 42 52.33 +20 07 44.0 r 084
2008-02-16 03:33:06 C 10 42 51.79 +20 07 40.7 r 084
2008-02-16 22:42:08 C 10 40 21.24 +19 52 28.7 c 560
2008-02-16 22:43:45 C 10 40 20.99 +19 52 27.3 c 560
2008-02-16 22:45:23 C 10 40 20.75 +19 52 26.1 c 560
2008-02-17 12:19:40 C 10 38 28.73 +19 41 39.1 r E14
2008-02-17 14:51:21 C 10 38 05.95 +19 39 29.2 r E14
2008-02-17 16:31:55 C 10 37 50.74 +19 38 00.4 r E14
2008-02-17 20:55:20 C 10 37 15.55 +19 33 13.7 c 127
2008-02-17 20:58:26 C 10 37 15.07 +19 33 10.8 c 127
2008-02-17 21:04:07 C 10 37 14.24 +19 33 06.2 c 127
2008-02-17 21:09:12 C 10 37 13.48 +19 33 01.7 c 127
2008-02-17 21:12:53 C 10 37 12.93 +19 32 58.5 c 127
2008-02-17 22:37:44 C 10 37 01.24 +19 31 54.3 r J51
2008-02-17 22:46:03 C 10 36 59.98 +19 31 47.1 r J51
2008-02-17 22:54:21 C 10 36 58.71 +19 31 39.8 r J51
2008-02-18 12:20:31 C 10 35 00.11 +19 19 56.7 c E14
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)