1221 Amor (1932 EA1)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4346323446 ± 8.90e-03
Semi-major axis (a)1.9198312726 AU ± 2.87e-03
Inclination (i)11.86883065° ± 1.06e+00
Long. of Asc. Node (Ω)171.23715667° ± 4.55e+00
Arg. of Perihelion (ω)26.75827105° ± 4.78e+00
Mean Anomaly (M)59.87045381° ± 2.84e+00
Mean Motion (n)0.3705251430°/day ± 8.32e-04
Perihelion dist (q)1.08541051 AU ± 1.72e-02
Aphelion dist (Q)2.75425204 AU ± 1.76e-02
Orbital Period2.66007935 yr ± 5.97e-03
NGA Modelr2
A2-1.98953082e-07 AU/d²
Physical Parameters
H (abs. magnitude)17.37
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.415″
Uncertainty0
Orbit TypeAmor
MOID0.108974 AU
Observations Used691
Oppositions58
Arc Total1932-2025
First Observation Used1932-03-12
Last Observation Used2025-02-19
Observations (738)
Date Type RA Dec Mag Band Observatory
1948-07-09 08:05:36 A 17 19 59.01 +09 28 42.6 662
1956-02-15 09:48:19 A 10 52 46.65 -16 19 23.9 662
1956-02-15 10:02:20 A 10 52 47.98 -16 19 19.8 662
1956-03-02 07:28:50 A 11 49 34.81 -10 15 57.0 662
1956-03-02 07:43:18 A 11 49 37.62 -10 15 30.5 662
1956-03-09 00:38:51 A 12 27 36.02 -04 05 33.6 12.9 012
1956-03-09 00:53:22 A 12 27 39.62 -04 04 54.7 024
1956-03-10 06:17:09 A 12 35 43.18 -02 39 23.7 15.2 760
1956-03-10 06:38:10 A 12 35 48.74 -02 38 19.7 760
1956-03-11 15:49:00 A 12 45 20.22 -00 55 31.4 330
1956-03-11 16:09:59 A 12 45 25.57 -00 54 28.5 330
1956-03-12 22:00:54 A 12 54 19.65 +00 42 51.7 062
1956-03-13 15:17:00 A 12 59 37.81 +01 41 53.9 12.5 388
1956-03-14 00:00:44 A 13 02 21.07 +02 11 49.3 12.7 012
1956-03-14 23:32:03 A 13 09 46.95 +03 34 29.3 062
1956-03-15 15:08:59 A 13 14 50.43 +04 30 59.9 12.5 388
1956-03-15 15:36:59 A 13 14 58.97 +04 32 39.2 388
1956-03-15 17:01:59 A 13 15 25.59 +04 37 52.1 12.5 388
1956-03-18 00:23:13 A 13 33 52.57 +08 01 41.1 12.5 024
1956-03-18 00:37:15 A 13 33 57.06 +08 02 31.9 024
1956-03-18 06:05:12 A 13 35 51.73 +08 23 07.2 662
1956-03-18 06:15:12 A 13 35 55.06 +08 23 44.5 662
1956-03-19 17:54:05 A 13 48 06.78 +10 37 01.4 330
1956-03-20 19:16:07 A 13 56 54.00 +12 11 02.5 330
1956-03-20 19:41:07 A 13 57 02.32 +12 12 34.7 330
1956-04-02 08:04:30 A 15 35 55.65 +26 55 51.1 662
1956-04-02 08:11:30 A 15 35 57.56 +26 56 05.3 662
1956-04-03 15:28:15 A 15 44 39.02 +27 55 37.8 330
1956-04-03 15:55:15 A 15 44 46.02 +27 56 15.9 330
1956-04-07 00:30:29 A 16 05 08.55 +30 02 14.6 13.5 024
1956-04-07 00:54:29 A 16 05 14.04 +30 02 47.3 024
1956-04-09 23:50:00 A 16 20 52.46 +31 26 29.5 13.7 024
1956-04-10 00:22:59 A 16 20 58.95 +31 27 04.0 024
1956-04-21 02:21:05 A 17 02 20.44 +34 01 39.2 012
1956-05-05 00:34:58 A 17 26 43.19 +33 53 15.2 14.6 024
1956-05-13 00:29:17 A 17 31 44.00 +32 44 18.0 012
1956-06-02 04:54:34 A 17 29 48.40 +26 52 52.4 18.0 754
1956-06-02 05:12:09 A 17 29 48.11 +26 52 31.2 18.0 754
1956-06-03 03:38:28 A 17 29 28.52 +26 30 45.9 18.0 754
1956-06-03 03:58:43 A 17 29 28.04 +26 30 27.7 18.0 754
1956-06-04 04:24:24 A 17 29 05.49 +26 06 12.9 18.0 754
1956-06-04 04:47:24 A 17 29 05.15 +26 05 48.5 18.0 754
1956-06-05 04:31:24 A 17 28 43.01 +25 41 46.5 754
1956-06-05 04:58:23 A 17 28 42.55 +25 41 22.8 18.0 754
1964-02-04 08:46:20 A 10 52 19.44 -17 31 03.4 689
1964-02-04 09:18:20 A 10 52 22.43 -17 31 11.5 689
1964-02-07 06:49:11 A 10 59 40.58 -17 45 45.4 689
1964-02-07 07:28:11 A 10 59 44.65 -17 45 52.8 689
1964-02-18 07:13:36 A 11 34 26.35 -17 25 11.6 689
1964-02-18 07:47:36 A 11 34 31.32 -17 24 59.0 689