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
2022-10-25 12:18:32 C 04 52 42.970 +49 44 05.14 V T08
2022-10-26 19:54:17 C 04 50 33.02 +50 01 31.6 V G33
2022-10-26 19:55:58 C 04 50 32.89 +50 01 32.2 V G33
2022-10-26 19:57:39 C 04 50 32.76 +50 01 32.9 V G33
2022-10-26 19:59:18 C 04 50 32.65 +50 01 34.0 V G33
2022-10-26 20:01:01 C 04 50 32.51 +50 01 35.1 V G33
2022-10-26 20:02:42 C 04 50 32.40 +50 01 36.1 V G33
2022-10-29 11:55:23 C 04 45 35.506 +50 35 18.17 V T08
2022-10-29 11:58:03 C 04 45 35.273 +50 35 19.50 V T08
2022-10-29 12:06:02 C 04 45 34.572 +50 35 23.53 V T08
2022-10-29 12:56:25 C 04 45 30.134 +50 35 48.80 V T08
2022-10-31 08:49:01 C 04 41 41.449 +50 56 51.29 V G96
2022-10-31 08:56:45 C 04 41 40.729 +50 56 55.03 V G96
2022-10-31 09:04:28 C 04 41 39.988 +50 56 58.52 V G96
2022-10-31 09:12:14 C 04 41 39.239 +50 57 02.09 V G96
2022-10-31 11:51:02 C 04 41 24.910 +50 58 17.40 V T05
2022-10-31 11:53:38 C 04 41 24.665 +50 58 18.55 V T05
2022-10-31 11:58:12 C 04 41 24.216 +50 58 20.68 V T05
2022-10-31 12:06:03 C 04 41 23.462 +50 58 24.17 V T05
2022-11-02 10:33:40 C 04 36 58.394 +51 18 37.15 V T08
2022-11-02 10:36:19 C 04 36 58.126 +51 18 38.27 V T08
2022-11-02 10:58:30 C 04 36 55.824 +51 18 47.70 V T08
2022-11-02 11:19:02 C 04 36 53.683 +51 18 56.34 V T08
2022-11-09 07:59:01 C 04 18 30.84 +52 10 26.0 V U55
2022-11-09 08:08:01 C 04 18 29.69 +52 10 28.0 V U55
2022-11-09 08:16:12 C 04 18 28.68 +52 10 29.8 V U55
2022-11-15 00:21:51 C 04 00 51.70 +52 24 20.8 V 130
2022-11-15 00:24:03 C 04 00 51.38 +52 24 20.8 V 130
2022-11-15 00:26:15 C 04 00 51.09 +52 24 20.7 V 130
2022-11-15 00:28:28 C 04 00 50.78 +52 24 20.6 V 130
2022-11-16 10:50:18 C 03 56 11.902 +52 23 14.42 V T05
2022-11-16 10:54:51 C 03 56 11.251 +52 23 14.24 V T05
2022-11-16 11:51:43 C 03 56 03.221 +52 23 10.21 V T05
2022-11-18 07:54:34 C 03 50 03.461 +52 18 41.08 V T08
2022-11-18 07:57:14 C 03 50 03.082 +52 18 40.72 V T08
2022-11-18 08:01:13 C 03 50 02.532 +52 18 40.18 V T08
2022-11-19 06:12:43 C 03 46 59.882 +52 15 09.97 Z U76
2022-11-19 06:20:00 C 03 46 58.896 +52 15 08.28 Z U76
2022-11-19 06:26:46 C 03 46 57.907 +52 15 07.92 Z U76
2022-11-22 08:58:51 C 03 36 48.107 +51 57 26.06 V G96
2022-11-22 09:07:18 C 03 36 46.951 +51 57 23.47 V G96
2022-11-22 10:09:20 C 03 36 38.336 +51 57 03.46 V G96
2022-11-22 10:18:59 C 03 36 37.004 +51 57 00.40 V G96
2022-11-22 10:49:34 C 03 36 33.458 +51 56 56.40 V T08
2022-11-22 10:54:13 C 03 36 32.798 +51 56 54.85 V T08
2022-11-22 11:02:52 C 03 36 31.594 +51 56 52.15 V T08
2022-11-22 11:17:33 C 03 36 29.537 +51 56 47.58 V T08
2022-11-23 09:29:30 C 03 33 30.604 +51 49 38.32 V G96
2022-11-23 09:37:57 C 03 33 29.459 +51 49 35.29 V G96
2022-11-23 09:46:26 C 03 33 28.278 +51 49 32.27 V G96
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)