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
2026-02-02 10:48:07 C 07 27 42.898 +43 46 15.85 V T08
2026-02-02 11:34:10 C 07 27 35.825 +43 45 46.80 V T05
2026-02-02 11:38:44 C 07 27 35.134 +43 45 44.03 V T05
2026-02-02 19:22:51 C 07 26 28.514 +43 40 54.70 Z C23
2026-02-02 20:04:36 C 07 26 22.243 +43 40 30.22 Z C23
2026-02-02 20:28:47 C 07 26 18.588 +43 40 15.78 Z C23
2026-02-03 09:22:46 C 07 24 24.953 +43 32 23.46 V T08
2026-02-03 09:27:22 C 07 24 24.250 +43 32 20.51 V T08
2026-02-03 09:35:57 C 07 24 22.954 +43 32 15.00 V T08
2026-02-03 09:41:52 C 07 24 22.049 +43 32 11.11 V T08
2026-02-03 09:46:28 C 07 24 21.350 +43 32 08.16 V T08
2026-02-03 09:51:44 C 07 24 20.544 +43 32 04.78 V T08
2026-02-03 12:23:47 B 07 23 59.287 +43 30 23.08 X 900
2026-02-03 12:39:24 B 07 23 56.935 +43 30 13.39 X 900
2026-02-04 06:51:04 C 07 21 19.450 +43 18 16.50 V 703
2026-02-04 06:54:31 C 07 21 18.940 +43 18 13.90 V 703
2026-02-04 06:57:58 C 07 21 18.454 +43 18 11.66 V 703
2026-02-04 07:01:25 C 07 21 17.910 +43 18 09.30 V 703
2026-02-04 10:00:38 C 07 20 52.375 +43 16 11.75 V T05
2026-02-04 10:05:16 C 07 20 51.691 +43 16 08.62 V T05
2026-02-04 10:22:20 C 07 20 49.159 +43 15 56.63 V T05
2026-02-04 10:31:35 C 07 20 47.784 +43 15 50.15 V T05
2026-02-04 21:47:45 B 07 19 13.584 +43 08 02.40 X J51
2026-02-04 21:59:01 B 07 19 11.930 +43 07 54.84 X J51
2026-02-04 22:10:18 B 07 19 10.294 +43 07 47.21 X J51
2026-02-04 22:52:47 C 07 19 03.595 +43 07 11.71 Z C23
2026-02-04 23:24:05 C 07 18 59.074 +43 06 48.42 Z C23
2026-02-05 00:03:34 B 07 18 54.62 +43 06 37.2 X X76
2026-02-05 00:05:35 B 07 18 54.33 +43 06 35.8 X X76
2026-02-05 00:07:21 B 07 18 54.07 +43 06 34.7 X X76
2026-02-05 00:23:25 C 07 18 50.532 +43 06 05.90 Z C23
2026-02-05 04:59:50 C 07 18 12.766 +43 02 58.06 V G96
2026-02-05 05:08:01 C 07 18 11.567 +43 02 52.22 V G96
2026-02-05 05:16:12 C 07 18 10.386 +43 02 46.46 V G96
2026-02-05 05:24:26 C 07 18 09.176 +43 02 40.67 V G96
2026-02-05 06:01:09 C 07 18 03.830 +43 02 14.70 V 703
2026-02-05 06:04:18 C 07 18 03.373 +43 02 12.34 V 703
2026-02-05 06:07:25 C 07 18 02.930 +43 02 10.10 V 703
2026-02-05 06:10:41 C 07 18 02.444 +43 02 07.73 V 703
2026-02-05 09:28:11 C 07 17 34.850 +42 59 50.28 V T05
2026-02-05 09:32:48 C 07 17 34.181 +42 59 46.93 V T05
2026-02-05 09:40:44 C 07 17 33.026 +42 59 41.06 V T05
2026-02-05 09:55:53 C 07 17 30.823 +42 59 29.98 V T05
2026-02-05 21:09:04 C 07 15 58.00 +42 51 13.1 X C40
2026-02-05 21:10:59 C 07 15 57.73 +42 51 11.6 X C40
2026-02-05 21:12:55 C 07 15 57.45 +42 51 10.1 X C40
2026-02-05 21:14:51 C 07 15 57.18 +42 51 08.8 X C40
2026-02-05 21:16:40 C 07 15 56.92 +42 51 07.4 X C40
2026-02-05 21:18:23 C 07 15 56.68 +42 51 06.1 X C40
2026-02-05 21:20:07 C 07 15 56.45 +42 51 04.7 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)