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
2022-01-27 15:20:00 C 14 35 36.15 -16 58 22.3 V T05
2022-01-27 15:48:27 C 14 35 41.54 -16 59 14.2 V T05
2022-01-27 15:54:22 C 14 35 42.65 -16 59 24.9 V T05
2022-01-27 16:04:57 C 14 35 44.65 -16 59 44.2 V T05
2022-01-29 15:02:12 C 14 44 59.46 -18 25 29.7 V T08
2022-01-29 15:10:11 C 14 45 01.03 -18 25 44.6 V T08
2022-01-29 15:38:56 C 14 45 06.69 -18 26 37.5 V T08
2022-01-29 15:44:18 C 14 45 07.75 -18 26 47.1 V T08
2022-01-31 12:03:14 C 14 54 12.38 -19 48 37.6 V 703
2022-01-31 12:11:12 C 14 54 14.01 -19 48 52.6 V 703
2022-01-31 12:19:09 C 14 54 15.63 -19 49 08.1 V 703
2022-01-31 12:27:06 C 14 54 17.27 -19 49 22.2 V 703
2022-01-31 15:18:06 C 14 54 53.09 -19 54 36.9 V T05
2022-01-31 15:43:13 C 14 54 58.25 -19 55 23.7 V T05
2022-01-31 15:57:05 C 14 55 01.10 -19 55 49.7 V T05
2022-01-31 16:06:25 C 14 55 03.02 -19 56 06.8 V T05
2022-02-04 08:57:01 C 15 14 24.355 -22 41 04.99 V W68
2022-02-04 09:01:55 C 15 14 25.466 -22 41 13.78 V W68
2022-02-04 09:25:04 C 15 14 30.624 -22 41 57.44 V W68
2022-02-04 09:30:01 C 15 14 31.673 -22 42 06.41 V W68
2022-02-05 12:46:04 C 15 20 46.83 -23 32 58.3 V 703
2022-02-05 12:53:38 C 15 20 48.53 -23 33 12.8 V 703
2022-02-05 13:01:14 C 15 20 50.26 -23 33 26.6 V 703
2022-02-05 13:08:49 C 15 20 52.02 -23 33 41.0 V 703
2022-02-08 08:14:52 C 15 36 55.356 -25 36 46.58 V W68
2022-02-08 08:22:07 C 15 36 57.113 -25 36 59.90 V W68
2022-02-08 08:43:07 C 15 37 02.218 -25 37 38.39 V W68
2022-02-08 08:48:24 C 15 37 03.504 -25 37 48.32 V W68
2022-02-16 07:00:17 C 16 27 52.654 -31 03 35.82 V W68
2022-02-16 07:06:04 C 16 27 54.307 -31 03 44.96 V W68
2022-02-16 07:14:53 C 16 27 56.834 -31 03 59.08 V W68
2022-02-16 07:34:39 C 16 28 02.474 -31 04 30.36 V W68
2022-02-23 09:08:47 C 17 19 36.674 -34 54 28.44 V W68
2022-02-23 09:18:37 C 17 19 39.761 -34 54 39.56 V W68
2022-02-23 09:33:54 C 17 19 44.585 -34 54 57.20 V W68
2022-02-23 09:38:09 C 17 19 45.914 -34 55 01.96 V W68
2022-03-03 06:51:56 C 18 21 41.17 -37 25 00.1 q Y00
2022-03-03 06:54:34 C 18 21 42.07 -37 25 01.0 q Y00
2022-03-03 06:57:12 C 18 21 42.91 -37 25 02.1 q Y00
2022-03-20 09:12:02 C 20 28 35.851 -35 45 56.45 V W68
2022-03-20 09:26:18 C 20 28 39.698 -35 45 45.14 V W68
2022-03-20 09:32:09 C 20 28 41.297 -35 45 40.50 V W68
2022-03-20 09:47:54 C 20 28 45.557 -35 45 27.54 V W68
2022-07-07 14:01:04 C 02 37 13.262 +18 48 37.94 V T08
2022-07-07 14:06:21 C 02 37 13.757 +18 48 42.77 V T08
2022-07-07 14:37:10 C 02 37 16.723 +18 49 11.78 V T08
2022-07-07 14:44:42 C 02 37 17.438 +18 49 18.55 V T08
2022-07-11 10:50:45 C 02 46 08.641 +20 12 36.76 V 703
2022-07-11 10:57:49 C 02 46 09.300 +20 12 43.24 V 703
2022-07-11 11:04:54 C 02 46 09.955 +20 12 49.68 V 703
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)