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
2021-11-10 22:33:56 s 1 +119704.82 0 +319810.58 1470.0 C57
2021-11-11 00:43:56 S 10 42 42.394 +18 27 09.94 V C57
2021-11-11 00:43:56 s 1 +115920.23 9 +324327.98 2840.0 C57
2021-11-11 00:53:56 S 10 42 42.854 +18 27 04.28 V C57
2021-11-11 00:53:56 s 1 +115626.26 3 +324667.66 6400.0 C57
2021-11-11 01:13:56 S 10 42 45.211 +18 26 48.55 V C57
2021-11-11 01:13:56 s 1 +115037.11 6 +325343.68 9490.0 C57
2021-11-11 01:33:56 S 10 42 47.323 +18 26 35.88 V C57
2021-11-11 01:33:56 s 1 +114446.38 7 +326015.26 7270.0 C57
2021-11-11 03:03:56 S 10 42 56.419 +18 25 38.17 V C57
2021-11-11 03:03:56 s 1 +111768.89 0 +328982.60 2680.0 C57
2021-11-11 03:13:56 S 10 42 57.638 +18 25 26.15 V C57
2021-11-11 03:13:56 s 1 +111469.48 3 +329306.79 7990.0 C57
2021-11-11 03:23:56 S 10 42 58.522 +18 25 17.11 V C57
2021-11-11 03:23:56 s 1 +111169.70 1 +329629.87 2040.0 C57
2021-11-11 03:43:56 S 10 43 00.466 +18 25 08.72 V C57
2021-11-11 03:43:56 s 1 +110569.01 6 +330272.75 6390.0 C57
2021-11-11 05:43:56 S 10 43 13.018 +18 23 42.36 V C57
2021-11-11 05:43:56 s 1 +106934.23 7 +334037.94 9900.0 C57
2021-11-11 05:53:56 S 10 43 14.525 +18 23 40.09 V C57
2021-11-11 05:53:56 s 1 +106629.01 7 +334344.61 5780.0 C57
2021-11-11 06:03:56 S 10 43 15.242 +18 23 34.40 V C57
2021-11-11 06:03:56 s 1 +106323.44 8 +334650.19 480.0 C57
2021-11-11 06:13:56 S 10 43 16.111 +18 23 30.37 V C57
2021-11-11 06:13:56 s 1 +106017.53 0 +334954.68 4030.0 C57
2021-11-11 06:23:56 S 10 43 17.086 +18 23 18.92 V C57
2021-11-11 06:23:56 s 1 +105711.26 5 +335258.08 6420.0 C57
2021-11-11 08:13:56 S 10 43 28.368 +18 22 04.48 V C57
2021-11-11 08:13:56 s 1 +102319.90 5 +338523.99 8050.0 C57
2021-11-11 08:43:56 S 10 43 31.978 +18 21 41.80 V C57
2021-11-11 08:43:56 s 1 +101388.00 4 +339392.00 1670.0 C57
2021-11-11 08:53:56 S 10 43 32.947 +18 21 39.17 V C57
2021-11-11 08:53:56 s 1 +101076.72 1 +339679.18 7400.0 C57
2021-11-11 09:03:56 S 10 43 33.780 +18 21 29.34 V C57
2021-11-11 09:03:56 s 1 +100765.11 4 +339965.28 2050.0 C57
2021-11-11 09:13:56 S 10 43 35.117 +18 21 25.63 V C57
2021-11-11 09:13:56 s 1 +100453.18 7 +340250.31 5640.0 C57
2021-11-11 13:33:56 S 10 44 01.956 +18 18 29.66 V C57
2021-11-11 13:33:56 s 1 +92235.978 0 +347286.45 4920.0 C57
2021-11-11 13:43:56 S 10 44 02.714 +18 18 23.26 V C57
2021-11-11 13:43:56 s 1 +91915.917 0 +347542.69 1750.0 C57
2021-11-11 13:53:56 S 10 44 03.979 +18 18 15.73 V C57
2021-11-11 13:53:56 s 1 +91595.573 0 +347797.87 7670.0 C57
2021-11-11 14:13:56 S 10 44 05.659 +18 18 02.74 V C57
2021-11-11 14:13:56 s 1 +90954.046 0 +348305.07 6760.0 C57
2021-11-11 14:23:56 S 10 44 06.578 +18 17 57.05 V C57
2021-11-11 14:23:56 s 1 +90632.864 0 +348557.08 9940.0 C57
2021-11-11 16:33:56 S 10 44 20.482 +18 16 25.90 V C57
2021-11-11 16:33:56 s 1 +86432.807 0 +351737.38 1020.0 C57
2021-11-11 16:43:56 S 10 44 21.053 +18 16 16.64 V C57
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)