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
2026-02-15 04:54:26 C 06 49 38.395 +39 33 47.38 V 703
2026-02-15 04:58:37 C 06 49 37.967 +39 33 43.13 V 703
2026-02-15 05:03:01 C 06 49 37.520 +39 33 38.77 V 703
2026-02-15 05:07:46 C 06 49 37.045 +39 33 34.09 V 703
2026-02-16 20:44:50 B 06 45 58.349 +38 53 26.74 X R20
2026-02-16 21:02:19 B 06 45 56.714 +38 53 08.99 X R20
2026-02-16 21:19:41 B 06 45 55.087 +38 52 51.31 X R20
2026-02-18 00:39:29 B 06 43 34.61 +38 24 44.6 X X76
2026-02-18 00:44:21 B 06 43 34.25 +38 24 39.4 X X76
2026-02-18 00:50:23 B 06 43 33.73 +38 24 33.5 X X76
2026-02-18 08:23:23 C 06 42 56.438 +38 16 32.23 V T08
2026-02-18 08:31:17 C 06 42 55.745 +38 16 23.84 V T08
2026-02-18 08:35:53 C 06 42 55.344 +38 16 18.95 V T08
2026-02-18 08:51:01 C 06 42 54.026 +38 16 02.96 V T08
2026-02-18 21:01:06 B 06 41 56.738 +38 03 14.58 X J51
2026-02-18 21:13:07 B 06 41 55.711 +38 03 02.23 X J51
2026-02-18 21:24:59 B 06 41 54.722 +38 02 49.85 X J51
2026-02-19 08:02:56 C 06 41 04.853 +37 51 39.02 V T08
2026-02-19 08:07:02 C 06 41 04.512 +37 51 34.67 V T08
2026-02-19 08:17:33 C 06 41 03.636 +37 51 23.26 V T08
2026-02-19 08:32:48 C 06 41 02.388 +37 51 06.95 V T08
2026-02-20 22:16:30 B 06 38 18.742 +37 10 53.98 X J51
2026-02-20 22:40:04 B 06 38 16.997 +37 10 28.49 X J51
2026-02-20 23:03:42 B 06 38 15.247 +37 10 02.71 X J51
2026-02-21 07:19:32 C 06 37 42.017 +37 01 13.51 V T05
2026-02-21 07:24:08 C 06 37 41.683 +37 01 08.54 V T05
2026-02-21 07:31:59 C 06 37 41.107 +37 01 00.01 V T05
2026-02-21 07:48:55 C 06 37 39.876 +37 00 41.69 V T05
2026-02-21 20:06:08 B 06 36 52.308 +36 47 25.08 X J51
2026-02-21 20:29:51 B 06 36 50.664 +36 46 59.88 X J51
2026-02-21 20:37:10 C 06 36 49.11 +36 46 45.5 X C40
2026-02-21 20:39:45 C 06 36 48.93 +36 46 42.6 X C40
2026-02-21 20:42:19 C 06 36 48.76 +36 46 39.8 X C40
2026-02-21 20:44:54 C 06 36 48.58 +36 46 36.9 X C40
2026-02-21 20:47:28 C 06 36 48.40 +36 46 34.2 X C40
2026-02-21 20:50:02 C 06 36 48.24 +36 46 31.4 X C40
2026-02-21 20:52:36 C 06 36 48.06 +36 46 28.6 X C40
2026-02-21 20:53:50 B 06 36 48.967 +36 46 34.43 X J51
2026-02-21 20:55:04 C 06 36 47.90 +36 46 26.0 X C40
2026-02-21 20:57:25 C 06 36 47.74 +36 46 23.2 X C40
2026-02-21 20:59:47 C 06 36 47.58 +36 46 20.7 X C40
2026-02-21 21:02:08 C 06 36 47.41 +36 46 17.9 X C40
2026-02-22 04:07:46 C 06 36 21.056 +36 38 44.81 V 703
2026-02-22 04:11:54 C 06 36 20.783 +36 38 40.52 V 703
2026-02-22 04:15:59 C 06 36 20.520 +36 38 36.13 V 703
2026-02-22 04:19:44 C 06 36 20.246 +36 38 32.03 V 703
2026-02-22 11:20:31 C 06 35 54.648 +36 30 56.58 V D29
2026-02-22 11:40:53 C 06 35 53.302 +36 30 34.75 V D29
2026-02-22 12:01:15 C 06 35 51.933 +36 30 12.92 V D29
2026-02-22 22:02:42 B 06 35 15.269 +36 19 23.34 X J51
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)