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
2019-11-26 16:47:43 C 22 42 42.33 +10 49 35.3 q C97
2019-11-26 16:49:54 C 22 42 42.52 +10 49 35.7 q C97
2019-11-26 18:27:30 C 22 42 50.55 +10 50 08.5 q C97
2019-11-26 18:29:41 C 22 42 50.72 +10 50 09.2 q C97
2019-11-26 18:31:52 C 22 42 50.89 +10 50 10.1 q C97
2019-11-26 18:34:02 C 22 42 51.08 +10 50 10.8 q C97
2019-11-27 01:16:11 C 22 43 25.06 +10 52 25.0 q I15
2019-11-27 01:20:21 C 22 43 25.41 +10 52 26.5 q I15
2019-11-27 01:24:31 C 22 43 25.74 +10 52 27.9 q I15
2019-11-28 06:46:36 C 22 45 53.52 +11 02 31.0 V T05
2019-11-28 07:07:52 C 22 45 55.25 +11 02 38.3 V T05
2019-11-28 07:13:34 C 22 45 55.74 +11 02 40.2 V T05
2019-11-28 07:33:18 C 22 45 57.36 +11 02 46.9 V T05
2019-11-30 15:57:16 C 22 50 41.63 +11 22 00.7 q C97
2019-11-30 15:59:29 C 22 50 41.82 +11 22 01.6 q C97
2019-11-30 16:01:40 C 22 50 41.97 +11 22 02.3 q C97
2019-11-30 16:03:51 C 22 50 42.15 +11 22 03.0 q C97
2019-12-03 02:38:19 C 22 55 37.71 +11 42 04.7 V 703
2019-12-03 02:46:36 C 22 55 38.34 +11 42 06.9 V 703
2019-12-03 02:54:54 C 22 55 39.03 +11 42 10.2 V 703
2019-12-03 03:03:11 C 22 55 39.72 +11 42 12.8 V 703
2019-12-04 06:44:21 C 22 57 59.34 +11 51 46.3 V T08
2019-12-04 06:47:57 C 22 57 59.66 +11 51 46.7 V T08
2019-12-04 06:48:36 C 22 57 59.72 +11 51 46.8 V T08
2019-12-04 07:06:15 C 22 58 01.15 +11 51 53.2 V T08
2019-12-04 07:06:55 C 22 58 01.24 +11 51 53.2 V T08
2019-12-04 07:20:49 C 22 58 02.33 +11 51 58.2 V T08
2019-12-05 23:36:35 C 23 01 26.09 +12 05 48.0 q I15
2019-12-05 23:40:45 C 23 01 26.40 +12 05 49.7 q I15
2019-12-05 23:44:55 C 23 01 26.79 +12 05 50.9 q I15
2019-12-08 02:23:07 C 23 05 42.73 +12 23 23.2 u H21
2019-12-08 02:25:11 C 23 05 42.90 +12 23 24.2 u H21
2019-12-08 02:25:50 C 23 05 42.98 +12 23 24.5 V H21
2019-12-08 02:29:19 C 23 05 43.26 +12 23 25.7 u H21
2019-12-08 02:31:22 C 23 05 43.43 +12 23 26.3 u H21
2019-12-08 02:32:43 C 23 05 43.55 +12 23 26.7 V H21
2019-12-08 02:35:31 C 23 05 43.75 +12 23 27.8 u H21
2019-12-08 02:38:19 C 23 05 43.97 +12 23 28.7 V H21
2019-12-08 02:39:51 C 23 05 44.13 +12 23 29.2 u H21
2019-12-08 06:55:20 C 23 06 05.64 +12 25 00.8 V T08
2019-12-08 06:59:59 C 23 06 06.05 +12 25 02.4 V T08
2019-12-08 07:09:22 C 23 06 06.81 +12 25 05.7 V T08
2019-12-08 07:23:33 C 23 06 07.99 +12 25 10.3 V T08
2019-12-09 07:19:21 C 23 08 09.24 +12 33 30.0 V T05
2019-12-09 07:23:59 C 23 08 09.58 +12 33 31.8 V T05
2019-12-09 07:32:09 C 23 08 10.31 +12 33 34.0 V T05
2019-12-09 07:47:39 C 23 08 11.53 +12 33 39.6 V T05
2019-12-10 19:32:52 C 23 11 12.95 +12 46 05.9 V 160
2019-12-10 19:35:48 C 23 11 13.17 +12 46 06.6 V 160
2019-12-10 19:38:52 C 23 11 13.44 +12 46 07.7 V 160
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)