메타데이터
| 항목 |
값 |
| Designation |
C/2006 S5 (Hill) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2007-12-09T18:01:38.340480Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:00Z |
| Obs used |
1177 |
| NEO |
- |
| M1 |
12.500 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2007-11-10.0000000 |
| e |
0.97300141 |
| q (au) |
2.630434 |
| a (au) |
97.428581 |
| i (deg) |
10.131379 |
| Ω (om, deg) |
281.563425 |
| ω (w, deg) |
182.109258 |
| M (ma, deg) |
359.969509 |
밝기
산란 + 전체 선형
$$
M_a = (13.005 + 2.274\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.005 |
| n |
2.274 |
| gf |
1.000 |
| gb |
-0.585 |
| k |
0.800 |
| 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) |
| 2026-03-26 00:00 |
16:59:49.72 |
-27:19:22.8 |
HIP 83232 |
21.22 |
| 2026-03-26 12:00 |
16:59:48.75 |
-27:19:24.8 |
HIP 83232 |
21.29 |
| 2026-03-27 00:00 |
16:59:47.75 |
-27:19:26.8 |
HIP 83073 |
21.35 |
| 2026-03-27 12:00 |
16:59:46.72 |
-27:19:28.8 |
HIP 83073 |
21.19 |
| 2026-03-28 00:00 |
16:59:45.66 |
-27:19:30.6 |
HIP 83073 |
21.02 |
| 2026-03-28 12:00 |
16:59:44.56 |
-27:19:32.5 |
HIP 83073 |
20.85 |
| 2026-03-29 00:00 |
16:59:43.44 |
-27:19:34.2 |
HIP 83073 |
20.67 |
| 2026-03-29 12:00 |
16:59:42.28 |
-27:19:36.0 |
HIP 83073 |
20.49 |
| 2026-03-30 00:00 |
16:59:41.10 |
-27:19:37.6 |
HIP 83073 |
20.30 |
| 2026-03-30 12:00 |
16:59:39.88 |
-27:19:39.2 |
HIP 83073 |
20.11 |
| 2026-03-31 00:00 |
16:59:38.63 |
-27:19:40.8 |
HIP 83073 |
19.91 |
| 2026-03-31 12:00 |
16:59:37.35 |
-27:19:42.3 |
HIP 83073 |
19.71 |
| 2026-04-01 00:00 |
16:59:36.05 |
-27:19:43.7 |
HIP 83073 |
19.51 |
| 2026-04-01 12:00 |
16:59:34.71 |
-27:19:45.1 |
HIP 83073 |
19.31 |
| 2026-04-02 00:00 |
16:59:33.34 |
-27:19:46.4 |
HIP 83073 |
19.10 |
| 2026-04-02 12:00 |
16:59:31.94 |
-27:19:47.7 |
HIP 83073 |
18.89 |
| 2026-04-03 00:00 |
16:59:30.51 |
-27:19:48.9 |
HIP 83073 |
18.67 |
| 2026-04-03 12:00 |
16:59:29.05 |
-27:19:50.0 |
HIP 83073 |
18.45 |
| 2026-04-04 00:00 |
16:59:27.56 |
-27:19:51.1 |
HIP 83073 |
18.24 |
| 2026-04-04 12:00 |
16:59:26.04 |
-27:19:52.2 |
HIP 83073 |
18.02 |
| 2026-04-05 00:00 |
16:59:24.50 |
-27:19:53.1 |
HIP 83073 |
17.79 |
| 2026-04-05 12:00 |
16:59:22.92 |
-27:19:54.1 |
HIP 83073 |
17.57 |
| 2026-04-06 00:00 |
16:59:21.31 |
-27:19:54.9 |
HIP 83073 |
17.35 |
| 2026-04-06 12:00 |
16:59:19.68 |
-27:19:55.7 |
HIP 83073 |
17.12 |
| 2026-04-07 00:00 |
16:59:18.01 |
-27:19:56.5 |
HIP 83073 |
16.90 |
| 2026-04-07 12:00 |
16:59:16.32 |
-27:19:57.1 |
HIP 83073 |
16.68 |
| 2026-04-08 00:00 |
16:59:14.60 |
-27:19:57.8 |
HIP 83073 |
16.45 |
| 2026-04-08 12:00 |
16:59:12.85 |
-27:19:58.3 |
HIP 83073 |
16.23 |
| 2026-04-09 00:00 |
16:59:11.07 |
-27:19:58.9 |
HIP 83073 |
16.01 |
| 2026-04-09 12:00 |
16:59:09.26 |
-27:19:59.3 |
HIP 83073 |
15.80 |
| 2026-04-10 00:00 |
16:59:07.42 |
-27:19:59.7 |
HIP 83073 |
15.59 |
| 2026-04-10 12:00 |
16:59:05.56 |
-27:20:00.0 |
HIP 83073 |
15.38 |
| 2026-04-11 00:00 |
16:59:03.67 |
-27:20:00.3 |
HIP 83073 |
15.17 |
| 2026-04-11 12:00 |
16:59:01.75 |
-27:20:00.5 |
HIP 83073 |
14.97 |
| 2026-04-12 00:00 |
16:58:59.80 |
-27:20:00.7 |
HIP 83073 |
14.78 |
| 2026-04-12 12:00 |
16:58:57.83 |
-27:20:00.8 |
HIP 83073 |
14.59 |
| 2026-04-13 00:00 |
16:58:55.82 |
-27:20:00.8 |
HIP 83073 |
14.41 |
| 2026-04-13 12:00 |
16:58:53.79 |
-27:20:00.8 |
HIP 83073 |
14.24 |
| 2026-04-14 00:00 |
16:58:51.74 |
-27:20:00.7 |
HIP 83073 |
14.08 |
| 2026-04-14 12:00 |
16:58:49.66 |
-27:20:00.5 |
HIP 83073 |
13.93 |
| 2026-04-15 00:00 |
16:58:47.55 |
-27:20:00.3 |
HIP 83073 |
13.79 |
| 2026-04-15 12:00 |
16:58:45.41 |
-27:20:00.0 |
HIP 83073 |
13.67 |
| 2026-04-16 00:00 |
16:58:43.25 |
-27:19:59.7 |
HIP 83073 |
13.55 |