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
2019-11-10 22:44:55 C 22 10 55.31 +08 38 31.7 q I15
2019-11-10 22:47:01 C 22 10 55.48 +08 38 31.6 q I15
2019-11-11 07:38:48 C 22 11 40.01 +08 41 47.6 V T05
2019-11-11 07:43:29 C 22 11 40.39 +08 41 49.4 V T05
2019-11-11 07:51:33 C 22 11 41.04 +08 41 52.1 V T05
2019-11-11 08:09:07 C 22 11 42.51 +08 41 58.6 V T05
2019-11-12 06:49:34 C 22 13 38.02 +08 50 07.2 V T05
2019-11-12 06:57:15 C 22 13 38.64 +08 50 09.9 V T05
2019-11-12 07:01:48 C 22 13 39.03 +08 50 11.7 V T05
2019-11-12 07:19:14 C 22 13 40.44 +08 50 17.7 V T05
2019-11-12 18:33:40 C 22 14 37.93 +08 54 13.5 V A16
2019-11-12 18:45:01 C 22 14 38.82 +08 54 17.8 V A16
2019-11-12 18:56:23 C 22 14 39.73 +08 54 21.9 V A16
2019-11-12 19:19:06 C 22 14 41.62 +08 54 30.0 V A16
2019-11-12 19:30:31 C 22 14 42.57 +08 54 34.6 V A16
2019-11-13 08:00:54 C 22 15 45.66 +08 59 05.5 V T08
2019-11-13 08:05:41 C 22 15 46.05 +08 59 07.2 V T08
2019-11-13 08:13:14 C 22 15 46.67 +08 59 09.8 V T08
2019-11-13 08:28:57 C 22 15 47.96 +08 59 15.3 V T08
2019-11-13 20:08:47 C 22 16 47.41 +09 03 20.0 V C95
2019-11-13 20:12:16 C 22 16 47.63 +09 03 20.3 V C95
2019-11-15 06:22:06 C 22 19 40.632 +09 15 26.05 U F52
2019-11-15 06:38:59 C 22 19 42.008 +09 15 31.93 U F52
2019-11-15 06:55:54 C 22 19 43.381 +09 15 37.79 U F52
2019-11-15 07:12:46 C 22 19 44.754 +09 15 43.63 U F52
2019-11-15 08:36:42 C 22 19 51.62 +09 16 12.6 V T05
2019-11-15 08:42:12 C 22 19 52.08 +09 16 14.7 V T05
2019-11-15 08:55:52 C 22 19 53.23 +09 16 18.8 V T05
2019-11-15 09:13:13 C 22 19 54.63 +09 16 25.1 V T05
2019-11-18 03:57:43 C 22 25 31.79 +09 39 35.4 V 703
2019-11-18 04:05:58 C 22 25 32.49 +09 39 39.0 V 703
2019-11-18 04:14:14 C 22 25 33.22 +09 39 41.5 V 703
2019-11-18 04:22:28 C 22 25 33.83 +09 39 44.1 V 703
2019-11-20 05:41:35 C 22 29 42.41 +09 56 44.3 V T05
2019-11-20 05:45:47 C 22 29 42.75 +09 56 45.7 V T05
2019-11-20 06:00:17 C 22 29 43.94 +09 56 50.8 V T05
2019-11-20 06:09:19 C 22 29 44.65 +09 56 53.7 V T05
2019-11-24 02:33:10 C 22 37 29.46 +10 28 23.7 V 703
2019-11-24 02:41:23 C 22 37 30.17 +10 28 26.5 V 703
2019-11-24 02:49:39 C 22 37 30.85 +10 28 29.1 V 703
2019-11-24 02:57:52 C 22 37 31.54 +10 28 31.9 V 703
2019-11-25 02:37:33 C 22 39 30.55 +10 36 35.1 V G96
2019-11-25 02:46:29 C 22 39 31.28 +10 36 37.9 V G96
2019-11-25 02:54:33 C 22 39 31.91 +10 36 40.9 V G96
2019-11-25 03:02:38 C 22 39 32.59 +10 36 43.5 V G96
2019-11-25 18:18:45 C 22 40 49.50 +10 41 53.3 V 160
2019-11-25 18:22:29 C 22 40 49.79 +10 41 54.8 V 160
2019-11-25 18:25:18 C 22 40 50.02 +10 41 55.6 V 160
2019-11-26 16:43:21 C 22 42 41.98 +10 49 33.8 q C97
2019-11-26 16:45:32 C 22 42 42.18 +10 49 34.3 q C97
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)