메타데이터
| 항목 |
값 |
| Designation |
D/1952 B1 (Harrington-Wilson) |
| Type |
D |
| Perihelion (tp_cal, UTC) |
1951-10-30T08:59:55.049280Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:10Z |
| Obs used |
7 |
| NEO |
- |
| M1 |
14.000 |
| K1 |
10.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1952-02-16.0000000 |
| e |
0.51432703 |
| q (au) |
1.664907 |
| a (au) |
3.428041 |
| i (deg) |
16.352402 |
| Ω (om, deg) |
128.478048 |
| ω (w, deg) |
343.034254 |
| M (ma, deg) |
16.868061 |
밝기
산란 + 전체 선형
$$
M_a = (H_0 + n\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
- |
| n |
- |
| gf |
- |
| gb |
- |
| k |
- |
| δ90 |
- |
| 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) |
| 2026-07-29 00:00 |
22:15:19.51 |
-19:26:33.8 |
HIP 109794 |
18.14 |
| 2026-07-29 12:00 |
22:15:01.38 |
-19:29:22.5 |
HIP 109794 |
17.37 |
| 2026-07-30 00:00 |
22:14:43.08 |
-19:32:11.6 |
HIP 109794 |
18.07 |
| 2026-07-30 12:00 |
22:14:24.59 |
-19:35:01.1 |
HIP 109721 |
18.10 |
| 2026-07-31 00:00 |
22:14:05.94 |
-19:37:50.9 |
HIP 109721 |
17.50 |
| 2026-07-31 12:00 |
22:13:47.11 |
-19:40:41.1 |
HIP 109721 |
18.42 |
| 2026-08-01 00:00 |
22:13:28.11 |
-19:43:31.5 |
HIP 109721 |
20.69 |
| 2026-08-01 12:00 |
22:13:08.94 |
-19:46:22.3 |
HIP 109721 |
23.95 |
| 2026-08-02 00:00 |
22:12:49.61 |
-19:49:13.3 |
HIP 109721 |
27.87 |
| 2026-08-02 12:00 |
22:12:30.12 |
-19:52:04.5 |
HIP 109721 |
32.23 |
| 2026-08-03 00:00 |
22:12:10.47 |
-19:54:55.9 |
HIP 109391 |
34.98 |
| 2026-08-03 12:00 |
22:11:50.65 |
-19:57:47.5 |
HIP 109391 |
30.60 |
| 2026-08-04 00:00 |
22:11:30.69 |
-20:00:39.2 |
HIP 109391 |
26.60 |
| 2026-08-04 12:00 |
22:11:10.57 |
-20:03:31.0 |
HIP 109391 |
23.20 |
| 2026-08-05 00:00 |
22:10:50.30 |
-20:06:23.0 |
HIP 109391 |
20.70 |
| 2026-08-05 12:00 |
22:10:29.89 |
-20:09:15.0 |
HIP 109391 |
19.50 |
| 2026-08-06 00:00 |
22:10:09.33 |
-20:12:07.0 |
HIP 109391 |
19.84 |
| 2026-08-06 12:00 |
22:09:48.64 |
-20:14:59.1 |
HIP 109391 |
21.69 |
| 2026-08-07 00:00 |
22:09:27.80 |
-20:17:51.1 |
HIP 109391 |
24.72 |
| 2026-08-07 12:00 |
22:09:06.83 |
-20:20:43.1 |
HIP 109391 |
28.57 |
| 2026-08-08 00:00 |
22:08:45.73 |
-20:23:35.1 |
HIP 109223 |
27.05 |
| 2026-08-08 12:00 |
22:08:24.50 |
-20:26:26.9 |
HIP 109223 |
21.95 |
| 2026-08-09 00:00 |
22:08:03.14 |
-20:29:18.6 |
HIP 109223 |
17.25 |
| 2026-08-09 12:00 |
22:07:41.67 |
-20:32:10.2 |
HIP 109223 |
13.41 |
| 2026-08-10 00:00 |
22:07:20.07 |
-20:35:01.5 |
HIP 109223 |
11.36 |
| 2026-08-10 12:00 |
22:06:58.36 |
-20:37:52.7 |
HIP 109223 |
12.09 |
| 2026-08-11 00:00 |
22:06:36.54 |
-20:40:43.6 |
HIP 109223 |
15.23 |
| 2026-08-11 12:00 |
22:06:14.62 |
-20:43:34.2 |
HIP 109223 |
19.67 |
| 2026-08-12 00:00 |
22:05:52.58 |
-20:46:24.5 |
HIP 109223 |
24.73 |
| 2026-08-12 12:00 |
22:05:30.45 |
-20:49:14.5 |
HIP 108955 |
28.83 |
| 2026-08-13 00:00 |
22:05:08.23 |
-20:52:04.2 |
HIP 108955 |
29.10 |
| 2026-08-13 12:00 |
22:04:45.91 |
-20:54:53.4 |
HIP 108955 |
30.53 |
| 2026-08-14 00:00 |
22:04:23.50 |
-20:57:42.2 |
HIP 108955 |
32.98 |
| 2026-08-14 12:00 |
22:04:01.01 |
-21:00:30.6 |
HIP 108839 |
34.73 |
| 2026-08-15 00:00 |
22:03:38.44 |
-21:03:18.5 |
HIP 108839 |
30.06 |
| 2026-08-15 12:00 |
22:03:15.80 |
-21:06:05.8 |
HIP 108839 |
25.94 |
| 2026-08-16 00:00 |
22:02:53.08 |
-21:08:52.7 |
HIP 108839 |
22.66 |
| 2026-08-16 12:00 |
22:02:30.29 |
-21:11:39.0 |
HIP 108839 |
20.64 |
| 2026-08-17 00:00 |
22:02:07.44 |
-21:14:24.7 |
HIP 108839 |
20.26 |
| 2026-08-17 12:00 |
22:01:44.53 |
-21:17:09.7 |
HIP 108839 |
21.63 |
| 2026-08-18 00:00 |
22:01:21.56 |
-21:19:54.2 |
HIP 108694 |
23.30 |
| 2026-08-18 12:00 |
22:00:58.54 |
-21:22:37.9 |
HIP 108694 |
25.81 |
| 2026-08-19 00:00 |
22:00:35.47 |
-21:25:21.0 |
HIP 108510 |
25.87 |