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
2026-03-05 08:13:48 C 06 25 53.455 +31 46 58.80 V T05
2026-03-05 08:29:37 C 06 25 53.098 +31 46 41.45 V T05
2026-03-06 07:55:30 C 06 25 31.318 +31 21 28.33 V T05
2026-03-06 08:04:05 C 06 25 31.169 +31 21 19.19 V T05
2026-03-06 08:08:04 C 06 25 31.080 +31 21 14.87 V T05
2026-03-06 08:13:23 C 06 25 30.989 +31 21 08.75 V T05
2026-03-06 08:15:59 C 06 25 30.938 +31 21 06.37 V T05
2026-03-08 20:39:19 C 06 24 55.934 +30 16 25.79 Z C23
2026-03-08 21:10:51 C 06 24 55.670 +30 15 51.59 Z C23
2026-03-09 00:21:15 C 06 24 54.250 +30 12 25.74 Z C23
2026-03-09 07:24:04 C 06 24 52.505 +30 05 10.25 V T08
2026-03-09 07:49:49 C 06 24 52.262 +30 04 42.56 V T08
2026-03-09 08:06:30 C 06 24 52.121 +30 04 24.46 V T08
2026-03-09 08:30:58 C 06 24 51.910 +30 03 58.03 V T08
2026-03-09 20:47:44 C 06 24 49.877 +29 50 50.24 Z C23
2026-03-09 20:59:40 C 06 24 49.805 +29 50 37.36 Z C23
2026-03-10 18:22:12 B 06 24 48.329 +29 28 06.24 X S42
2026-03-10 18:30:41 B 06 24 48.274 +29 27 57.28 X S42
2026-03-10 18:36:34 B 06 24 48.266 +29 27 51.08 X S42
2026-03-10 18:44:40 B 06 24 48.238 +29 27 42.52 X S42
2026-03-10 20:15:19 C 06 24 47.80 +29 26 04.9 X C40
2026-03-10 20:17:28 C 06 24 47.80 +29 26 02.5 X C40
2026-03-10 20:19:36 C 06 24 47.80 +29 26 00.2 X C40
2026-03-10 20:21:45 C 06 24 47.79 +29 25 57.9 X C40
2026-03-10 20:23:54 C 06 24 47.80 +29 25 55.6 X C40
2026-03-10 20:26:03 C 06 24 47.80 +29 25 53.3 X C40
2026-03-10 20:28:12 C 06 24 47.77 +29 25 50.9 X C40
2026-03-10 20:30:21 C 06 24 47.78 +29 25 48.8 X C40
2026-03-10 20:32:29 C 06 24 47.79 +29 25 46.3 X C40
2026-03-10 20:34:38 C 06 24 47.76 +29 25 44.1 X C40
2026-03-10 20:36:47 C 06 24 47.76 +29 25 41.7 X C40
2026-03-10 20:38:55 C 06 24 47.77 +29 25 39.5 X C40
2026-03-11 18:46:27 C 06 24 50.21 +29 02 27.5 X C40
2026-03-11 18:48:36 C 06 24 50.21 +29 02 25.1 X C40
2026-03-11 18:50:45 C 06 24 50.24 +29 02 23.0 X C40
2026-03-11 18:52:54 C 06 24 50.25 +29 02 20.6 X C40
2026-03-11 18:55:02 C 06 24 50.22 +29 02 18.3 X C40
2026-03-11 18:57:10 C 06 24 50.23 +29 02 16.1 X C40
2026-03-11 19:01:28 C 06 24 50.23 +29 02 11.3 X C40
2026-03-11 19:05:46 C 06 24 50.21 +29 02 06.8 X C40
2026-03-11 19:07:55 C 06 24 50.23 +29 02 04.6 X C40
2026-03-11 19:10:03 C 06 24 50.25 +29 02 02.4 X C40
2026-03-11 22:13:34 B 06 24 50.683 +28 58 51.10 V R61
2026-03-11 22:24:25 B 06 24 50.686 +28 58 39.58 V R61
2026-03-11 22:33:48 B 06 24 50.690 +28 58 29.50 V R61
2026-03-12 00:52:20 B 06 24 51.20 +28 56 18.6 X X76
2026-03-12 00:55:16 B 06 24 51.21 +28 56 15.3 X X76
2026-03-12 00:59:04 B 06 24 51.19 +28 56 11.3 X X76
2026-03-12 18:06:09 C 06 24 56.44 +28 38 04.9 X C40
2026-03-12 18:08:19 C 06 24 56.42 +28 38 01.9 X C40
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)