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
2026-02-05 21:21:48 C 07 15 56.20 +42 51 03.5 X C40
2026-02-05 21:23:31 C 07 15 55.97 +42 51 02.3 X C40
2026-02-05 21:25:13 C 07 15 55.72 +42 51 01.0 X C40
2026-02-05 21:26:55 C 07 15 55.48 +42 50 59.7 X C40
2026-02-05 21:28:38 C 07 15 55.24 +42 50 58.4 X C40
2026-02-06 09:27:03 C 07 14 17.597 +42 42 11.63 V T08
2026-02-06 09:31:39 C 07 14 16.942 +42 42 08.10 V T08
2026-02-06 09:39:33 C 07 14 15.821 +42 42 02.02 V T08
2026-02-06 09:56:01 C 07 14 13.486 +42 41 49.27 V T08
2026-02-07 01:51:37 B 07 12 05.134 +42 29 31.16 X J51
2026-02-07 02:03:00 B 07 12 03.557 +42 29 21.95 X J51
2026-02-07 02:14:35 B 07 12 01.954 +42 29 12.55 X J51
2026-02-07 20:32:37 C 07 09 39.365 +42 14 37.03 Z C23
2026-02-07 22:39:29 C 07 09 22.382 +42 12 54.61 Z C23
2026-02-07 23:00:58 C 07 09 19.471 +42 12 37.19 Z C23
2026-02-09 05:16:57 C 07 05 30.109 +41 47 35.48 V 703
2026-02-09 05:21:09 C 07 05 29.404 +41 47 32.50 V 703
2026-02-09 05:30:16 C 07 05 28.252 +41 47 23.17 V 703
2026-02-09 23:18:39 B 07 03 17.501 +41 32 02.65 X J51
2026-02-09 23:29:55 B 07 03 16.068 +41 31 52.64 X J51
2026-02-09 23:41:09 B 07 03 14.638 +41 31 42.71 X J51
2026-02-10 04:50:36 C 07 02 37.889 +41 27 10.15 V G96
2026-02-10 04:58:11 C 07 02 36.924 +41 27 03.42 V G96
2026-02-10 05:05:47 C 07 02 35.984 +41 26 56.76 V G96
2026-02-10 05:13:24 C 07 02 35.020 +41 26 50.06 V G96
2026-02-10 18:34:48 C 07 01 00.34 +41 14 53.5 X C40
2026-02-10 18:36:43 C 07 01 00.10 +41 14 51.8 X C40
2026-02-10 18:38:38 C 07 00 59.87 +41 14 50.0 X C40
2026-02-10 18:40:33 C 07 00 59.64 +41 14 48.4 X C40
2026-02-10 18:42:22 C 07 00 59.41 +41 14 46.8 X C40
2026-02-10 18:44:05 C 07 00 59.20 +41 14 45.3 X C40
2026-02-10 18:45:48 C 07 00 58.99 +41 14 43.7 X C40
2026-02-10 18:47:31 C 07 00 58.78 +41 14 42.2 X C40
2026-02-10 18:49:14 C 07 00 58.56 +41 14 40.7 X C40
2026-02-10 18:50:57 C 07 00 58.36 +41 14 39.2 X C40
2026-02-10 18:52:39 C 07 00 58.16 +41 14 37.6 X C40
2026-02-10 18:54:22 C 07 00 57.94 +41 14 36.0 X C40
2026-02-11 13:25:23 C 06 58 49.864 +40 57 51.24 V D29
2026-02-11 13:48:18 C 06 58 47.126 +40 57 30.19 V D29
2026-02-11 14:11:12 C 06 58 44.392 +40 57 09.03 V D29
2026-02-14 08:54:44 C 06 51 36.005 +39 53 39.77 V T05
2026-02-14 09:08:36 C 06 51 34.529 +39 53 25.80 V T05
2026-02-14 09:25:21 C 06 51 32.753 +39 53 08.95 V T05
2026-02-14 12:29:03 C 06 51 15.492 +39 50 19.36 V P07
2026-02-14 12:50:40 C 06 51 13.181 +39 49 57.58 V P07
2026-02-14 13:12:54 C 06 51 10.850 +39 49 35.65 V P07
2026-02-14 14:25:00 C 06 51 03.238 +39 48 24.30 V P07
2026-02-15 00:18:13 B 06 50 04.40 +39 38 19.0 V R53
2026-02-15 00:20:21 B 06 50 04.17 +39 38 17.2 V R53
2026-02-15 00:22:12 B 06 50 03.99 +39 38 15.2 V R53
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)