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
2021-12-29 23:13:54 S 12 50 26.323 +00 36 07.63 V C57
2021-12-29 23:13:54 s 1 -89942.298 0 -67897.603 8760.0 C57
2021-12-29 23:23:54 S 12 50 27.406 +00 35 52.48 V C57
2021-12-29 23:23:54 s 1 -88924.667 0 -68666.705 6060.0 C57
2022-01-01 13:56:27 C 12 58 29.54 -00 42 19.9 V T08
2022-01-01 14:01:07 C 12 58 30.13 -00 42 25.9 V T08
2022-01-01 14:09:44 C 12 58 31.22 -00 42 37.0 V T08
2022-01-01 14:27:01 C 12 58 33.40 -00 42 59.4 V T08
2022-01-05 11:07:25 C 13 10 44.69 -02 46 07.1 V 703
2022-01-05 11:15:06 C 13 10 45.71 -02 46 17.6 V 703
2022-01-05 11:22:45 C 13 10 46.71 -02 46 28.2 V 703
2022-01-05 11:30:25 C 13 10 47.71 -02 46 38.6 V 703
2022-01-05 13:41:29 C 13 11 05.50 -02 49 35.7 V T08
2022-01-05 13:46:46 C 13 11 06.23 -02 49 42.9 V T08
2022-01-05 13:54:44 C 13 11 07.26 -02 49 54.0 V T08
2022-01-05 14:09:21 C 13 11 09.19 -02 50 13.8 V T08
2022-01-07 13:53:31 C 13 17 39.68 -03 56 35.5 V T05
2022-01-07 13:58:07 C 13 17 40.31 -03 56 41.9 V T05
2022-01-07 14:06:03 C 13 17 41.38 -03 56 53.3 V T05
2022-01-07 14:23:12 C 13 17 43.71 -03 57 17.4 V T05
2022-01-09 13:57:47 C 13 24 23.00 -05 05 25.9 V T08
2022-01-09 14:03:48 C 13 24 23.85 -05 05 34.9 V T08
2022-01-09 14:28:51 C 13 24 27.37 -05 06 11.4 V T08
2022-01-13 11:00:48 C 13 37 56.23 -07 24 39.0 V 703
2022-01-13 11:08:52 C 13 37 57.42 -07 24 51.3 V 703
2022-01-13 11:16:56 C 13 37 58.62 -07 25 03.7 V 703
2022-01-13 11:25:00 C 13 37 59.80 -07 25 16.2 V 703
2022-01-13 14:57:32 C 13 38 31.65 -07 30 41.3 V T08
2022-01-13 15:03:30 C 13 38 32.52 -07 30 50.6 V T08
2022-01-13 15:12:08 C 13 38 33.79 -07 31 03.9 V T08
2022-01-13 15:39:12 C 13 38 37.78 -07 31 45.6 V T08
2022-01-14 11:41:56 C 13 41 39.83 -08 02 53.8 V G96
2022-01-14 11:48:04 C 13 41 40.74 -08 03 03.5 V G96
2022-01-14 11:54:12 C 13 41 41.67 -08 03 13.0 V G96
2022-01-14 12:00:21 C 13 41 42.59 -08 03 22.6 V G96
2022-01-17 13:35:11 C 13 53 11.81 -10 00 39.6 V T08
2022-01-17 13:49:48 C 13 53 14.10 -10 01 03.5 V T08
2022-01-17 14:04:26 C 13 53 16.41 -10 01 27.4 V T08
2022-01-21 11:07:23 C 14 08 40.58 -12 36 49.0 V 703
2022-01-21 11:22:11 C 14 08 43.07 -12 37 14.4 V 703
2022-01-21 11:29:36 C 14 08 44.20 -12 37 26.3 V 703
2022-01-21 14:30:35 C 14 09 15.41 -12 42 34.3 V T08
2022-01-21 14:33:14 C 14 09 15.85 -12 42 39.0 V T08
2022-01-21 14:41:55 C 14 09 17.31 -12 42 53.7 V T08
2022-01-21 14:57:10 C 14 09 19.89 -12 43 19.9 V T08
2022-01-22 14:24:21 C 14 13 23.94 -13 23 42.6 V T05
2022-01-22 14:28:58 C 14 13 24.73 -13 23 50.7 V T05
2022-01-22 14:37:32 C 14 13 26.20 -13 24 05.5 V T05
2022-01-22 14:40:51 C 14 13 26.75 -13 24 12.3 V T05
2022-01-22 14:57:20 C 14 13 29.60 -13 24 40.0 V T05
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)