2063 Bacchus (1977 HB)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3494289066 ± 2.00e+00
Semi-major axis (a)1.0779986113 AU ± 3.00e+00
Inclination (i)9.43469494° ± 4.00e+00
Long. of Asc. Node (Ω)33.03636030° ± 5.00e+00
Arg. of Perihelion (ω)55.35066867° ± 6.00e+00
Mean Anomaly (M)234.78705685° ± 2.00e-05
Mean Motion (n)0.8806127601°/day ± 3.68e+00
Perihelion dist (q)0.70131474 AU ± 2.91e+00
Aphelion dist (Q)1.45468249 AU ± 4.59e+00
Orbital Period1.11925051 yr ± 4.67e+00
NGA Modelr2
A2-3.62707582e-06 AU/d²
Physical Parameters
H (abs. magnitude)17.21
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.501″
Uncertainty0
Orbit TypeApollo
MOID0.067153 AU
Observations Used1463
Radar Obs Used7
Gaia Obs Used54
Oppositions4
Arc Total1977-2025
First Observation Used1977-04-24
Last Observation Used2025-06-15
Observations (1537)
Date Type RA Dec Mag Band Observatory
2024-04-14 18:32:21 C 14 55 28.28 -08 47 04.5 u 323
2024-04-14 18:44:28 C 14 55 24.49 -08 47 23.1 u 323
2024-04-14 21:42:39 B 14 54 34.318 -08 53 07.48 V 160
2024-04-14 21:48:25 B 14 54 32.537 -08 53 16.66 V 160
2024-04-16 10:34:28 C 14 43 49.062 -09 46 56.39 V 703
2024-04-16 10:37:43 C 14 43 48.112 -09 47 00.78 V 703
2024-04-16 10:40:58 C 14 43 47.147 -09 47 05.28 V 703
2024-04-16 10:44:13 C 14 43 46.204 -09 47 09.82 V 703
2024-04-16 10:50:14 C 14 43 47.073 -09 47 09.72 X F52
2024-04-16 11:06:26 C 14 43 42.228 -09 47 32.55 X F52
2024-04-16 11:22:36 C 14 43 37.413 -09 47 54.97 X F52
2024-04-16 11:38:54 C 14 43 32.553 -09 48 17.87 X F52
2024-04-16 18:26:46 C 14 41 37.65 -09 56 50.5 u 323
2024-04-16 18:40:58 C 14 41 33.47 -09 57 09.6 u 323
2024-04-17 00:47:51 C 14 39 52.104 -10 05 26.66 V M22
2024-04-17 00:53:43 C 14 39 50.410 -10 05 34.51 V M22
2024-04-17 01:01:34 C 14 39 48.139 -10 05 44.99 V M22
2024-04-17 01:15:55 C 14 39 44.002 -10 06 04.03 V M22
2024-04-18 01:04:54 C 14 33 22.66 -10 37 03.8 834
2024-04-18 01:42:54 C 14 33 12.27 -10 37 52.7 834
2024-04-18 05:38:13 C 14 32 08.105 -10 42 54.04 V W68
2024-04-18 05:43:29 C 14 32 06.648 -10 43 00.66 V W68
2024-04-18 06:21:06 C 14 31 56.256 -10 43 47.28 V W68
2024-04-18 06:29:04 C 14 31 54.062 -10 43 57.25 V W68
2024-04-18 07:32:28 C 14 31 38.845 -10 46 13.66 V 703
2024-04-18 07:35:46 C 14 31 37.938 -10 46 17.72 V 703
2024-04-18 07:39:04 C 14 31 37.027 -10 46 21.76 V 703
2024-04-18 07:42:21 C 14 31 36.124 -10 46 25.97 V 703
2024-04-18 20:23:43 C 14 28 20.90 -11 02 01.7 M32
2024-04-18 20:25:57 C 14 28 20.31 -11 02 04.3 M32
2024-04-18 20:28:12 C 14 28 19.72 -11 02 07.1 M32
2024-04-18 20:30:26 C 14 28 19.13 -11 02 09.8 M32
2024-04-18 20:33:07 C 14 28 18.43 -11 02 13.1 M32
2024-04-19 00:05:28 C 14 27 22.169 -11 05 19.68 V M22
2024-04-19 00:10:16 C 14 27 20.885 -11 05 25.30 V M22
2024-04-19 00:18:14 C 14 27 18.758 -11 05 34.73 V M22
2024-04-19 01:06:59 C 14 27 05.786 -11 06 31.68 V M22
2024-04-19 22:18:16 C 14 21 51.950 -11 31 58.38 V 089
2024-04-19 22:19:31 C 14 21 51.650 -11 31 59.60 V 089
2024-04-19 22:20:41 C 14 21 51.360 -11 32 00.77 V 089
2024-04-19 22:21:09 C 14 21 51.250 -11 32 01.26 V 089
2024-04-19 22:22:23 C 14 21 50.919 -11 32 02.66 V 089
2024-04-19 22:23:33 C 14 21 50.629 -11 32 04.09 V 089
2024-04-19 22:24:01 C 14 21 50.500 -11 32 04.70 V 089
2024-04-19 22:25:15 C 14 21 50.190 -11 32 06.01 V 089
2024-04-19 22:26:25 C 14 21 49.903 -11 32 07.60 V 089
2024-04-19 22:56:58 C 14 21 42.143 -11 32 41.00 V 089
2024-04-20 08:55:27 C 14 19 20.232 -11 43 18.80 V T05
2024-04-20 09:10:11 C 14 19 16.524 -11 43 35.04 V T05
2024-04-20 09:12:47 C 14 19 15.869 -11 43 37.85 V T05
Radar Observations (19)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1996-03-22 18:00:00 384093.223 2.3 Hz 8510 -14 -14
1996-03-22 20:10:00 87190665 15 us 8510 -14 -14
1996-03-22 22:50:00 86769151 2 us 8510 -14 -14
1996-03-22 22:50:00 371573.7 2 Hz 8510 -14 -14
1996-03-22.750000 38409322 200 Hz 8510 253 253
1996-03-22.840278 8719066500 15000 us 8510 253 253
1996-03-22.951389 8676915100 2000 us 8510 253 253
1996-03-24 17:50:00 324347 2 Hz 8510 -14 -14
1996-03-24 22:10:00 79673366 1 us 8510 -14 -14
1996-03-24 23:00:00 79562896 10 us 8510 -14 -14
1996-03-24.743056 32434700 200 Hz 8510 253 253
1996-03-24.923611 7967336600 1000 us 8510 253 253
1996-03-24.958333 7956289600 10000 us 8510 253 253
1996-03-29 19:30:00 96363 2 Hz 8510 -14 -14
1996-03-29.812500 9636300 200 Hz 8510 253 253
2012-09-13 11:31:00 -76858.4372 0.3 Hz 2380 -1 -1
2012-09-13 12:27:00 248520536.79 4 us 2380 -1 -1
2012-09-14 12:21:00 251520636.56 4 us 2380 -1 -1
2015-04-18 23:59:00 217913625.88 4 us 2380 -1 -1
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)