2101 Adonis (1936 CA)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7641273448 ± 2.00e+00
Semi-major axis (a)1.8740253992 AU ± 3.00e+00
Inclination (i)1.31997884° ± 4.00e+00
Long. of Asc. Node (Ω)349.40567161° ± 5.00e+00
Arg. of Perihelion (ω)43.71128561° ± 6.00e+00
Mean Anomaly (M)24.47916672° ± 7.33e-06
Mean Motion (n)0.3841926633°/day ± 9.23e-01
Perihelion dist (q)0.44203135 AU ± 3.81e+00
Aphelion dist (Q)3.30601945 AU ± 6.49e+00
Orbital Period2.56544796 yr ± 6.16e+00
NGA Modelr2
A2-3.31959118e-06 AU/d²
Physical Parameters
H (abs. magnitude)18.69
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.120″
Uncertainty0
Orbit TypeApollo
MOID0.011508 AU
Observations Used167
Radar Obs Used5
Oppositions29
Arc Total1936-2025
First Observation Used1936-02-12
Last Observation Used2025-07-19
Observations (181)
Date Type RA Dec Mag Band Observatory
2020-05-26 11:11:04 C 21 46 19.74 -16 22 13.9 V G96
2020-06-09 10:48:16 C 23 26 44.88 -07 06 19.2 V G96
2020-06-09 10:53:39 C 23 26 46.94 -07 06 06.4 V G96
2020-06-09 10:59:02 C 23 26 49.06 -07 05 52.7 V G96
2020-06-09 11:04:27 C 23 26 51.12 -07 05 40.3 V G96
2025-06-24 11:38:38 C 16 15 02.371 -25 03 03.71 V P07
2025-06-24 11:41:12 C 16 15 01.882 -25 03 03.49 V P07
2025-06-24 14:39:26 C 16 14 29.561 -25 01 54.95 V P07
2025-06-24 14:42:40 C 16 14 28.985 -25 01 53.87 V P07
2025-06-24 15:52:05 C 16 14 16.349 -25 01 25.32 V P07
2025-06-24 16:10:21 C 16 14 13.039 -25 01 18.19 V P07
2025-06-24 16:12:02 C 16 14 12.732 -25 01 17.40 V P07
2025-06-25 04:04:14 C 16 12 06.39 -24 56 28.0 W W84
2025-06-25 04:10:09 C 16 12 05.33 -24 56 25.7 W W84
2025-06-25 04:12:06 C 16 12 04.96 -24 56 24.7 W W84
2025-06-27 03:39:18 C 16 03 33.175 -24 35 40.52 V W68
2025-06-27 03:43:53 C 16 03 32.364 -24 35 38.58 V W68
2025-06-27 03:54:34 C 16 03 30.319 -24 35 33.00 V W68
2025-06-27 04:09:22 C 16 03 27.612 -24 35 26.27 V W68
2025-06-27 05:52:09 C 16 03 08.525 -24 34 36.41 V W68
2025-06-30 07:15:40 C 15 49 43.101 -23 57 36.52 X F51
2025-06-30 07:48:41 C 15 49 36.863 -23 57 18.54 X F51
2025-06-30 08:05:09 C 15 49 33.721 -23 57 09.41 X F51
2025-07-18 19:17:08 C 14 30 46.433 -18 29 47.65 V M22
2025-07-18 19:31:05 C 14 30 44.081 -18 29 36.20 V M22
2025-07-18 19:35:42 C 14 30 43.315 -18 29 31.88 V M22
2025-07-18 20:12:07 C 14 30 37.253 -18 28 59.92 V M22
2025-07-19 19:48:02 C 14 26 47.858 -18 08 28.03 V M22
2025-07-19 19:52:01 C 14 26 47.218 -18 08 24.97 V M22
2025-07-19 19:59:57 C 14 26 45.881 -18 08 17.56 V M22
2025-07-19 20:16:14 C 14 26 43.174 -18 08 04.06 V M22
Radar Observations (10)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1984-07-14 18:20:00 -328238.7 0.3 Hz 2380 -1 -1
1984-07-14.763889 -32823870 30 Hz 2380 251 251
1984-07-15 18:20:00 -341813.1 0.3 Hz 2380 -1 -1
1984-07-15.763889 -34181310 30 Hz 2380 251 251
1984-07-16 17:40:00 -350648 0.3 Hz 2380 -1 -1
1984-07-16.736111 -35064800 30 Hz 2380 251 251
1984-07-17 17:30:00 -358654.3 0.3 Hz 2380 -1 -1
1984-07-17.729167 -35865430 30 Hz 2380 251 251
1984-07-18 17:20:00 -365447.2 0.3 Hz 2380 -1 -1
1984-07-18.722222 -36544720 30 Hz 2380 251 251
Station codes
-1 Arecibo (305-m, 1963–2020)