메타데이터
| 항목 |
값 |
| Designation |
310P/Hill |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2015-04-19T01:39:38.698560Z |
| Orbit solution date (soln_date, UTC) |
2025-02-28T13:42:32Z |
| Obs used |
587 |
| NEO |
- |
| M1 |
13.500 |
| K1 |
11.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2017-01-08.0000000 |
| e |
0.42601974 |
| q (au) |
2.388747 |
| a (au) |
4.161724 |
| i (deg) |
13.186071 |
| Ω (om, deg) |
8.960664 |
| ω (w, deg) |
31.658059 |
| M (ma, deg) |
73.128566 |
밝기
산란 + 전체 선형
$$
M_a = (14.263 + 3.893\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.263 |
| n |
3.893 |
| gf |
0.885 |
| gb |
-0.839 |
| k |
0.996 |
| δ90 |
1.000 |
| 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) |
| 2026-03-26 00:00 |
12:07:45.97 |
+01:19:46.7 |
HIP 59145 |
16.44 |
| 2026-03-26 12:00 |
12:07:28.02 |
+01:21:04.0 |
HIP 59145 |
15.39 |
| 2026-03-27 00:00 |
12:07:10.10 |
+01:22:21.0 |
HIP 59145 |
15.72 |
| 2026-03-27 12:00 |
12:06:52.21 |
+01:23:37.6 |
HIP 59001 |
16.22 |
| 2026-03-28 00:00 |
12:06:34.36 |
+01:24:54.0 |
HIP 59001 |
12.70 |
| 2026-03-28 12:00 |
12:06:16.54 |
+01:26:09.9 |
HIP 59001 |
10.13 |
| 2026-03-29 00:00 |
12:05:58.77 |
+01:27:25.5 |
HIP 59001 |
9.31 |
| 2026-03-29 12:00 |
12:05:41.03 |
+01:28:40.8 |
HIP 59001 |
10.64 |
| 2026-03-30 00:00 |
12:05:23.35 |
+01:29:55.6 |
HIP 59001 |
13.48 |
| 2026-03-30 12:00 |
12:05:05.71 |
+01:31:10.0 |
HIP 58851 |
13.63 |
| 2026-03-31 00:00 |
12:04:48.12 |
+01:32:24.0 |
HIP 58851 |
9.96 |
| 2026-03-31 12:00 |
12:04:30.59 |
+01:33:37.5 |
HIP 58851 |
7.37 |
| 2026-04-01 00:00 |
12:04:13.11 |
+01:34:50.6 |
HIP 58851 |
7.12 |
| 2026-04-01 12:00 |
12:03:55.69 |
+01:36:03.2 |
HIP 58851 |
9.37 |
| 2026-04-02 00:00 |
12:03:38.34 |
+01:37:15.3 |
HIP 58851 |
12.87 |
| 2026-04-02 12:00 |
12:03:21.04 |
+01:38:26.9 |
HIP 58851 |
16.83 |
| 2026-04-03 00:00 |
12:03:03.82 |
+01:39:38.1 |
HIP 58851 |
20.98 |
| 2026-04-03 12:00 |
12:02:46.66 |
+01:40:48.6 |
HIP 58851 |
25.22 |
| 2026-04-04 00:00 |
12:02:29.57 |
+01:41:58.7 |
HIP 58851 |
29.50 |
| 2026-04-04 12:00 |
12:02:12.56 |
+01:43:08.2 |
HIP 58851 |
33.80 |
| 2026-04-05 00:00 |
12:01:55.63 |
+01:44:17.1 |
HIP 58643 |
38.03 |
| 2026-04-05 12:00 |
12:01:38.77 |
+01:45:25.4 |
HIP 58466 |
33.95 |
| 2026-04-06 00:00 |
12:01:22.00 |
+01:46:33.2 |
HIP 58466 |
29.65 |
| 2026-04-06 12:00 |
12:01:05.31 |
+01:47:40.3 |
HIP 58466 |
25.40 |
| 2026-04-07 00:00 |
12:00:48.71 |
+01:48:46.9 |
HIP 58466 |
21.19 |
| 2026-04-07 12:00 |
12:00:32.19 |
+01:49:52.7 |
HIP 58466 |
17.05 |
| 2026-04-08 00:00 |
12:00:15.77 |
+01:50:58.0 |
HIP 58466 |
13.02 |
| 2026-04-08 12:00 |
11:59:59.44 |
+01:52:02.6 |
HIP 58466 |
9.19 |
| 2026-04-09 00:00 |
11:59:43.21 |
+01:53:06.5 |
HIP 58466 |
5.95 |
| 2026-04-09 12:00 |
11:59:27.07 |
+01:54:09.7 |
HIP 58466 |
4.62 |
| 2026-04-10 00:00 |
11:59:11.04 |
+01:55:12.2 |
HIP 58466 |
6.46 |
| 2026-04-10 12:00 |
11:58:55.11 |
+01:56:14.0 |
HIP 58466 |
9.79 |
| 2026-04-11 00:00 |
11:58:39.28 |
+01:57:15.1 |
HIP 58466 |
13.53 |
| 2026-04-11 12:00 |
11:58:23.56 |
+01:58:15.5 |
HIP 58466 |
17.39 |
| 2026-04-12 00:00 |
11:58:07.95 |
+01:59:15.1 |
HIP 58466 |
21.30 |
| 2026-04-12 12:00 |
11:57:52.46 |
+02:00:13.9 |
HIP 58466 |
25.21 |
| 2026-04-13 00:00 |
11:57:37.07 |
+02:01:12.0 |
HIP 58267 |
25.45 |
| 2026-04-13 12:00 |
11:57:21.81 |
+02:02:09.3 |
HIP 58267 |
23.33 |
| 2026-04-14 00:00 |
11:57:06.66 |
+02:03:05.8 |
HIP 58267 |
21.74 |
| 2026-04-14 12:00 |
11:56:51.63 |
+02:04:01.5 |
HIP 58267 |
20.78 |
| 2026-04-15 00:00 |
11:56:36.73 |
+02:04:56.4 |
HIP 58267 |
20.51 |
| 2026-04-15 12:00 |
11:56:21.95 |
+02:05:50.5 |
HIP 58136 |
17.89 |
| 2026-04-16 00:00 |
11:56:07.30 |
+02:06:43.7 |
HIP 58136 |
14.57 |