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
2018-11-08 14:06:03 C 08 10 17.31 +41 26 56.9 U T08
2018-11-08 14:14:47 C 08 10 17.67 +41 26 59.5 U T08
2018-11-08 14:18:09 C 08 10 17.81 +41 27 00.8 U T08
2018-11-08 14:26:51 C 08 10 18.16 +41 27 03.4 U T08
2018-11-08 14:38:17 C 08 10 18.59 +41 27 06.7 U T08
2018-11-08 14:50:24 C 08 10 19.07 +41 27 10.5 U T08
2018-11-10 08:46:49 C 08 12 03.34 +41 40 26.2 V 703
2018-11-10 08:54:45 C 08 12 03.64 +41 40 29.1 V 703
2018-11-10 09:02:41 C 08 12 03.92 +41 40 31.8 V 703
2018-11-10 14:12:45 C 08 12 15.90 +41 42 15.9 U T05
2018-11-10 14:20:49 C 08 12 16.19 +41 42 18.5 U T05
2018-11-10 14:24:49 C 08 12 16.31 +41 42 19.8 U T05
2018-11-10 14:32:50 C 08 12 16.61 +41 42 22.4 U T05
2018-11-10 14:37:33 C 08 12 16.78 +41 42 24.0 U T05
2018-11-10 14:45:29 C 08 12 17.08 +41 42 26.6 U T05
2018-11-10 14:49:31 C 08 12 17.24 +41 42 27.9 U T05
2018-11-10 14:57:35 C 08 12 17.51 +41 42 30.6 U T05
2018-11-13 08:22:35 C 08 14 41.62 +42 04 29.8 V 703
2018-11-13 08:30:15 C 08 14 41.88 +42 04 32.9 V 703
2018-11-13 08:37:56 C 08 14 42.06 +42 04 35.5 V 703
2018-11-13 08:45:36 C 08 14 42.39 +42 04 38.4 V 703
2018-11-13 08:51:12 C 08 14 42.43 +42 04 40.1 V 703
2018-11-13 08:59:08 C 08 14 42.75 +42 04 44.7 V 703
2018-11-13 09:07:04 C 08 14 43.00 +42 04 46.4 V 703
2018-11-13 09:15:00 C 08 14 43.21 +42 04 50.8 V 703
2018-11-16 08:28:55 C 08 16 54.93 +42 30 28.5 V 703
2018-11-16 08:36:45 C 08 16 55.14 +42 30 31.6 V 703
2018-11-16 08:44:35 C 08 16 55.37 +42 30 34.8 V 703
2018-11-16 08:52:25 C 08 16 55.59 +42 30 37.9 V 703
2018-11-18 09:51:13 C 08 18 09.83 +42 49 19.6 V 703
2018-11-18 09:58:57 C 08 18 10.00 +42 49 22.6 V 703
2018-11-18 10:06:41 C 08 18 10.16 +42 49 25.8 V 703
2018-11-18 10:14:26 C 08 18 10.31 +42 49 29.1 V 703
2018-11-18 11:08:56 C 08 18 11.40 +42 49 50.2 V G96
2018-11-18 11:16:22 C 08 18 11.51 +42 49 54.2 V G96
2018-11-18 11:23:47 C 08 18 11.69 +42 49 56.6 V G96
2018-11-18 11:31:13 C 08 18 11.83 +42 49 59.6 V G96
2018-11-20 13:10:55 C 08 19 12.83 +43 09 51.1 U T08
2018-11-20 13:22:13 C 08 19 13.01 +43 09 55.5 U T08
2018-11-20 13:23:33 C 08 19 13.10 +43 09 57.2 U T08
2018-11-20 13:47:32 C 08 19 13.44 +43 10 06.5 U T08
2018-11-20 13:48:53 C 08 19 13.41 +43 10 07.2 U T08
2018-11-20 13:59:40 C 08 19 13.57 +43 10 11.6 U T08
2018-11-25 10:05:56 C 08 20 34.22 +43 59 57.0 U I41
2018-11-25 10:08:36 C 08 20 34.23 +43 59 58.1 U I41
2018-11-25 10:39:25 C 08 20 34.27 +44 00 12.3 U I41
2018-11-25 10:50:07 C 08 20 34.29 +44 00 17.1 U I41
2018-11-28 13:08:31 C 08 20 35.71 +44 34 37.9 U T08
2018-11-28 13:20:38 C 08 20 35.63 +44 34 43.6 U T08
2018-11-28 13:32:02 C 08 20 35.50 +44 34 49.3 U T08
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)