1580 Betulia (1950 KA)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4876047101 ± 2.00e+00
Semi-major axis (a)2.1949743206 AU ± 3.00e+00
Inclination (i)52.18777815° ± 4.00e+00
Long. of Asc. Node (Ω)62.22480892° ± 5.00e+00
Arg. of Perihelion (ω)159.71713922° ± 6.00e+00
Mean Anomaly (M)80.26713945° ± 3.89e-05
Mean Motion (n)0.3030875594°/day ± 6.21e-01
Perihelion dist (q)1.12469450 AU ± 4.65e+00
Aphelion dist (Q)3.26525414 AU ± 6.26e+00
Orbital Period3.25195229 yr ± 6.67e+00
NGA Modelr2
A21.40142724e-06 AU/d²
Physical Parameters
H (abs. magnitude)14.54
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.282″
Uncertainty0
Orbit TypeAmor
MOID0.133321 AU
Observations Used1981
Radar Obs Used10
Gaia Obs Used93
Oppositions46
Arc Total1950-2016
First Observation Used1950-05-22
Last Observation Used2025-12-13
Observations (2056)
Date Type RA Dec Mag Band Observatory
2021-01-16 06:48:06 C 03 05 34.06 +35 31 35.8 V T08
2021-01-16 06:58:44 C 03 05 33.71 +35 31 36.0 V T08
2021-01-16 07:13:20 C 03 05 33.26 +35 31 37.1 V T08
2021-01-18 12:56:09 C 03 04 00.76 +35 34 37.6 q D29
2021-01-18 13:05:03 C 03 04 00.44 +35 34 38.3 q D29
2021-01-18 13:16:31 C 03 04 00.13 +35 34 38.8 q D29
2021-01-18 13:25:25 C 03 04 00.00 +35 34 39.4 q D29
2021-01-18 13:36:52 C 03 03 59.62 +35 34 39.6 q D29
2021-01-18 13:45:47 C 03 03 59.45 +35 34 40.0 q D29
2021-02-11 05:40:33 C 02 59 11.33 +36 25 50.7 V T05
2021-02-11 05:46:37 C 02 59 11.45 +36 25 50.7 V T05
2021-02-11 05:56:36 C 02 59 11.53 +36 25 53.3 V T05
2021-02-11 06:15:07 C 02 59 11.58 +36 25 54.4 V T05
2021-02-12 03:19:03 C 02 59 22.95 +36 28 41.2 V V00
2021-02-12 03:25:54 C 02 59 23.01 +36 28 42.1 V V00
2021-02-12 03:32:44 C 02 59 23.07 +36 28 43.0 V V00
2021-02-12 03:39:35 C 02 59 23.14 +36 28 43.9 V V00
2021-02-13 05:44:22 C 02 59 39.171 +36 32 17.65 U F52
2021-02-13 06:00:59 C 02 59 39.339 +36 32 19.85 U F52
2021-02-13 06:34:15 C 02 59 39.679 +36 32 24.26 U F52
2021-03-07 03:01:45 C 03 11 57.93 +38 06 34.6 V 703
2021-03-07 03:09:56 C 03 11 58.25 +38 06 35.9 V 703
2021-03-07 03:18:06 C 03 11 58.64 +38 06 36.5 V 703
2021-03-07 03:26:17 C 03 11 58.89 +38 06 38.0 V 703
2021-03-23 02:34:58 C 03 28 12.08 +39 39 54.1 V G96
2021-03-23 02:41:10 C 03 28 12.36 +39 39 55.7 V G96
2021-03-23 02:47:22 C 03 28 12.61 +39 39 57.0 V G96
2021-03-23 02:53:33 C 03 28 12.98 +39 39 58.5 V G96
2022-07-25 09:35:01 C 03 40 50.70 -36 10 51.0 V W94
2022-07-25 09:43:16 C 03 40 51.03 -36 10 53.5 V W94
2022-07-25 09:51:27 C 03 40 51.35 -36 10 55.9 V W94
2022-08-05 03:25:44 C 03 48 47.902 -37 28 15.92 V M22
2022-08-05 03:36:16 C 03 48 48.211 -37 28 20.28 V M22
2022-08-05 04:05:24 C 03 48 48.864 -37 28 29.57 V M22
2022-08-05 04:17:00 C 03 48 49.128 -37 28 34.14 V M22
2022-08-07 09:37:25 C 03 50 03.50 -37 46 59.1 V W94
2022-08-07 09:45:46 C 03 50 03.69 -37 47 02.1 V W94
2022-08-07 09:54:09 C 03 50 03.87 -37 47 05.3 V W94
2022-08-21 03:35:09 C 03 54 16.572 -39 55 54.70 V M22
2022-08-21 03:45:39 C 03 54 16.560 -39 55 59.05 V M22
2022-08-21 03:48:55 C 03 54 16.613 -39 56 00.28 V M22
2022-08-21 03:57:44 C 03 54 16.589 -39 56 04.06 V M22
2022-08-22 06:31:11 C 03 54 20.338 -40 07 22.19 V W68
2022-08-22 06:35:45 C 03 54 20.393 -40 07 24.49 V W68
2022-08-22 06:43:39 C 03 54 20.390 -40 07 27.26 V W68
2022-08-22 07:08:58 C 03 54 20.395 -40 07 38.53 V W68
2022-08-25 14:36:00 C 03 54 14.514 -40 42 09.28 U F52
2022-08-25 14:43:20 C 03 54 14.474 -40 42 12.57 U F52
2022-08-25 14:50:40 C 03 54 14.438 -40 42 15.75 U F52
2022-08-25 14:58:02 C 03 54 14.399 -40 42 19.12 U F52
Radar Observations (22)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1976-05-18 05:56:50 225980 7 Hz 2380 -1 -1
1976-05-18.247801 22598000 100 Hz 2380 251 251
1976-05-19 05:52:16 186012.5 7 Hz 2380 -1 -1
1976-05-19.244630 18601250 100 Hz 2380 251 251
1989-05-23 12:00:00 501134 20 Hz 8495 -14 -14
1989-05-23.500000 50113400 2000 Hz 8495 253 253
1989-05-26 01:42:00 185537450 12 us 2380 -1 -1
1989-05-26.070833 18553745000 12000 us 2380 251 251
1989-05-28 01:38:00 185094484 12 us 2380 -1 -1
1989-05-28.068056 18509448400 12000 us 2380 251 251
1989-05-29 00:20:00 -72175 5 Hz 2380 -1 -1
1989-05-29.013889 -7217500 500 Hz 2380 251 251
2002-05-28.997222 23747341100 10000 us 2380 251 251
2002-05-30 01:10:00 237420023 2 us 2380 -1 -1
2002-05-30 01:10:00 -16023.93 1 Hz 2380 -1 -1
2002-05-30.048611 23742002300 2000 us 2380 251 251
2002-06-01 00:57:00 240888928 2 us 2380 -1 -1
2002-06-01 00:57:00 -80205.3478 1 Hz 2380 -1 -1
2002-06-01.039583 24088892800 2000 us 2380 251 251
2002-06-03 00:09:00 248731233 2 us 2380 -1 -1
2002-06-03 00:09:00 -138436.315 1 Hz 2380 -1 -1
2002-06-03.006250 24873123300 2000 us 2380 251 251
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)