메타데이터
| 항목 |
값 |
| Designation |
C/1989 A6 (Shoemaker) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1988-11-02T02:05:44.491200Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:38Z |
| Obs used |
28 |
| NEO |
- |
| M1 |
13.300 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1989-02-10.0000000 |
| e |
1.00000000 |
| q (au) |
2.207946 |
| a (au) |
- |
| i (deg) |
25.505596 |
| Ω (om, deg) |
74.314457 |
| ω (w, deg) |
18.838143 |
| M (ma, deg) |
- |
밝기
산란 + 전체 선형
$$
M_a = (11.985 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.985 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
10.000 |
| 파라미터 |
기호 |
범위 |
설명 |
| 태양·지구거리 1 AU에서의 절대등급 |
H0 |
-5 to 20 |
혜성의 고유 밝기 |
| 광도 기울기 파라미터 |
n |
2 to 6 |
태양거리 변화에 따른 밝기 변화율 |
| 전방 산란 비대칭 계수 |
gf |
0.8 to 1 |
전방 산란의 강도 |
| 후방 산란 비대칭 계수 |
gb |
-1 to -0.5 |
후방 산란의 강도 |
| 분할 계수 |
k |
0.8 to 1 |
전·후방 산란 기여도 비율 |
| 먼지/가스 밝기 비 |
δ90 |
1 to 10 |
코마에서 먼지 산란 대비 가스 방출의 상대 기여 |
참고: EPSC-DPS2025-160
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
16:41:09.28 |
-20:51:44.3 |
HIP 81632 |
28.40 |
| 2026-06-01 12:00 |
16:41:07.27 |
-20:51:40.9 |
HIP 81632 |
28.22 |
| 2026-06-02 00:00 |
16:41:05.26 |
-20:51:37.5 |
HIP 81632 |
28.04 |
| 2026-06-02 12:00 |
16:41:03.25 |
-20:51:34.2 |
HIP 81632 |
27.87 |
| 2026-06-03 00:00 |
16:41:01.24 |
-20:51:30.8 |
HIP 81632 |
27.71 |
| 2026-06-03 12:00 |
16:40:59.23 |
-20:51:27.4 |
HIP 81632 |
27.55 |
| 2026-06-04 00:00 |
16:40:57.22 |
-20:51:24.0 |
HIP 81632 |
27.40 |
| 2026-06-04 12:00 |
16:40:55.21 |
-20:51:20.7 |
HIP 81632 |
27.26 |
| 2026-06-05 00:00 |
16:40:53.21 |
-20:51:17.3 |
HIP 81632 |
27.12 |
| 2026-06-05 12:00 |
16:40:51.20 |
-20:51:14.0 |
HIP 81632 |
26.99 |
| 2026-06-06 00:00 |
16:40:49.19 |
-20:51:10.6 |
HIP 81632 |
26.87 |
| 2026-06-06 12:00 |
16:40:47.19 |
-20:51:07.3 |
HIP 81632 |
26.76 |
| 2026-06-07 00:00 |
16:40:45.19 |
-20:51:04.0 |
HIP 81632 |
26.66 |
| 2026-06-07 12:00 |
16:40:43.18 |
-20:51:00.6 |
HIP 81632 |
26.57 |
| 2026-06-08 00:00 |
16:40:41.18 |
-20:50:57.3 |
HIP 81632 |
26.48 |
| 2026-06-08 12:00 |
16:40:39.18 |
-20:50:54.0 |
HIP 81632 |
26.40 |
| 2026-06-09 00:00 |
16:40:37.19 |
-20:50:50.7 |
HIP 81632 |
26.33 |
| 2026-06-09 12:00 |
16:40:35.19 |
-20:50:47.4 |
HIP 81632 |
26.27 |
| 2026-06-10 00:00 |
16:40:33.20 |
-20:50:44.1 |
HIP 81632 |
26.21 |
| 2026-06-10 12:00 |
16:40:31.21 |
-20:50:40.9 |
HIP 81632 |
26.17 |
| 2026-06-11 00:00 |
16:40:29.22 |
-20:50:37.6 |
HIP 81632 |
26.13 |
| 2026-06-11 12:00 |
16:40:27.23 |
-20:50:34.3 |
HIP 81632 |
26.10 |
| 2026-06-12 00:00 |
16:40:25.25 |
-20:50:31.1 |
HIP 81632 |
26.09 |
| 2026-06-12 12:00 |
16:40:23.27 |
-20:50:27.8 |
HIP 81632 |
26.07 |
| 2026-06-13 00:00 |
16:40:21.29 |
-20:50:24.6 |
HIP 81632 |
26.07 |
| 2026-06-13 12:00 |
16:40:19.32 |
-20:50:21.4 |
HIP 81632 |
26.08 |
| 2026-06-14 00:00 |
16:40:17.35 |
-20:50:18.2 |
HIP 81632 |
26.09 |
| 2026-06-14 12:00 |
16:40:15.38 |
-20:50:15.0 |
HIP 81632 |
26.11 |
| 2026-06-15 00:00 |
16:40:13.42 |
-20:50:11.8 |
HIP 81632 |
26.14 |
| 2026-06-15 12:00 |
16:40:11.46 |
-20:50:08.6 |
HIP 81632 |
26.18 |
| 2026-06-16 00:00 |
16:40:09.50 |
-20:50:05.5 |
HIP 81632 |
26.23 |
| 2026-06-16 12:00 |
16:40:07.55 |
-20:50:02.3 |
HIP 81632 |
26.28 |
| 2026-06-17 00:00 |
16:40:05.61 |
-20:49:59.2 |
HIP 81632 |
26.35 |
| 2026-06-17 12:00 |
16:40:03.66 |
-20:49:56.1 |
HIP 81632 |
26.42 |
| 2026-06-18 00:00 |
16:40:01.73 |
-20:49:53.0 |
HIP 81632 |
26.49 |
| 2026-06-18 12:00 |
16:39:59.79 |
-20:49:49.9 |
HIP 81632 |
26.58 |
| 2026-06-19 00:00 |
16:39:57.87 |
-20:49:46.8 |
HIP 81632 |
26.67 |
| 2026-06-19 12:00 |
16:39:55.94 |
-20:49:43.7 |
HIP 81632 |
26.77 |
| 2026-06-20 00:00 |
16:39:54.03 |
-20:49:40.7 |
HIP 81632 |
26.88 |
| 2026-06-20 12:00 |
16:39:52.11 |
-20:49:37.6 |
HIP 81632 |
26.99 |
| 2026-06-21 00:00 |
16:39:50.21 |
-20:49:34.6 |
HIP 81632 |
27.11 |
| 2026-06-21 12:00 |
16:39:48.31 |
-20:49:31.6 |
HIP 81632 |
27.24 |
| 2026-06-22 00:00 |
16:39:46.41 |
-20:49:28.6 |
HIP 81632 |
27.37 |