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
2026-03-28 21:52:08 B 06 34 19.265 +22 07 41.99 X J51
2026-03-28 22:14:29 B 06 34 20.023 +22 07 19.42 X J51
2026-03-29 06:34:57 C 06 34 39.962 +21 59 11.22 V T05
2026-03-29 06:40:10 C 06 34 40.154 +21 59 06.43 V T05
2026-03-29 06:48:17 C 06 34 40.438 +21 58 58.19 V T05
2026-03-29 07:05:17 C 06 34 41.045 +21 58 41.16 V T05
2026-03-29 19:07:33 C 06 35 10.42 +21 46 46.8 q 006
2026-03-29 19:10:16 C 06 35 10.52 +21 46 44.3 q 006
2026-03-29 19:12:57 C 06 35 10.62 +21 46 41.6 q 006
2026-03-29 19:16:33 C 06 35 10.75 +21 46 38.1 q 006
2026-03-29 19:18:58 C 06 35 10.84 +21 46 35.5 q 006
2026-03-29 19:26:53 B 06 35 10.987 +21 46 26.43 W G34
2026-03-29 19:30:36 B 06 35 11.145 +21 46 22.74 W G34
2026-03-29 19:35:55 B 06 35 11.357 +21 46 16.67 W G34
2026-03-30 22:00:38 C 06 36 16.356 +21 20 23.53 Z C23
2026-03-30 22:10:29 B 06 36 16.759 +21 20 14.60 X Y84
2026-03-30 22:15:27 B 06 36 16.949 +21 20 09.56 X Y84
2026-03-30 22:15:48 C 06 36 16.987 +21 20 08.84 Z C23
2026-03-30 22:20:18 B 06 36 17.146 +21 20 04.63 X Y84
2026-03-31 19:42:34 C 06 37 11.911 +20 59 10.86 Z C23
2026-03-31 19:55:13 C 06 37 12.434 +20 58 57.94 Z C23
2026-04-01 05:54:13 C 06 37 38.335 +20 49 20.42 V T05
2026-04-01 06:04:47 C 06 37 38.753 +20 49 09.95 V T05
2026-04-01 06:10:46 C 06 37 38.981 +20 49 04.15 V T05
2026-04-01 06:29:31 C 06 37 39.730 +20 48 45.47 V T05
2026-04-01 17:38:48 C 06 38 09.178 +20 37 44.26 X C40
2026-04-01 17:40:57 C 06 38 09.262 +20 37 42.13 X C40
2026-04-01 17:43:06 C 06 38 09.350 +20 37 40.08 X C40
2026-04-01 17:45:15 C 06 38 09.442 +20 37 37.85 X C40
2026-04-01 17:47:23 C 06 38 09.535 +20 37 35.87 X C40
2026-04-01 17:49:32 C 06 38 09.622 +20 37 33.71 X C40
2026-04-01 17:51:41 C 06 38 09.708 +20 37 31.55 X C40
2026-04-01 17:53:50 C 06 38 09.790 +20 37 29.53 X C40
2026-04-01 17:55:59 C 06 38 09.883 +20 37 27.26 X C40
2026-04-01 17:58:06 C 06 38 09.943 +20 37 25.18 X C40
2026-04-01 18:00:15 C 06 38 10.070 +20 37 23.23 X C40
2026-04-01 18:02:24 C 06 38 10.152 +20 37 20.82 X C40
2026-04-01 20:29:25 C 06 38 16.620 +20 34 55.99 Z C23
2026-04-01 21:25:25 C 06 38 19.032 +20 33 59.44 Z C23
2026-04-01 22:19:32 C 06 38 21.365 +20 33 06.05 Z C23
2026-04-02 20:13:10 B 06 39 20.570 +20 11 44.23 X Y84
2026-04-02 20:18:08 B 06 39 20.808 +20 11 39.34 X Y84
2026-04-02 20:23:00 B 06 39 21.022 +20 11 34.40 X Y84
2026-04-04 06:29:34 C 06 40 55.351 +19 38 19.46 V T05
2026-04-04 06:34:07 C 06 40 55.536 +19 38 15.18 V T05
2026-04-04 06:44:00 C 06 40 55.968 +19 38 05.50 V T05
2026-04-04 06:59:14 C 06 40 56.626 +19 37 50.20 V T05
2026-04-05 04:00:52 C 06 41 56.460 +19 17 12.20 V G96
2026-04-05 04:07:40 C 06 41 56.770 +19 17 05.50 V G96
2026-04-05 04:14:29 C 06 41 57.070 +19 16 58.80 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)