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) |
| 2026-07-29 00:00 |
16:48:07.87 |
-27:01:49.2 |
HIP 82157 |
24.27 |
| 2026-07-29 12:00 |
16:48:05.88 |
-27:01:42.1 |
HIP 82157 |
23.92 |
| 2026-07-30 00:00 |
16:48:03.90 |
-27:01:35.1 |
HIP 82157 |
23.57 |
| 2026-07-30 12:00 |
16:48:01.96 |
-27:01:28.1 |
HIP 82157 |
23.22 |
| 2026-07-31 00:00 |
16:48:00.04 |
-27:01:21.1 |
HIP 82157 |
22.89 |
| 2026-07-31 12:00 |
16:47:58.14 |
-27:01:14.1 |
HIP 82157 |
22.56 |
| 2026-08-01 00:00 |
16:47:56.28 |
-27:01:07.2 |
HIP 82157 |
22.24 |
| 2026-08-01 12:00 |
16:47:54.44 |
-27:01:00.3 |
HIP 82157 |
21.93 |
| 2026-08-02 00:00 |
16:47:52.62 |
-27:00:53.4 |
HIP 82157 |
21.62 |
| 2026-08-02 12:00 |
16:47:50.84 |
-27:00:46.6 |
HIP 82157 |
21.32 |
| 2026-08-03 00:00 |
16:47:49.08 |
-27:00:39.7 |
HIP 82157 |
21.03 |
| 2026-08-03 12:00 |
16:47:47.35 |
-27:00:32.9 |
HIP 82157 |
20.74 |
| 2026-08-04 00:00 |
16:47:45.64 |
-27:00:26.2 |
HIP 82157 |
20.46 |
| 2026-08-04 12:00 |
16:47:43.97 |
-27:00:19.4 |
HIP 82157 |
20.19 |
| 2026-08-05 00:00 |
16:47:42.32 |
-27:00:12.7 |
HIP 82157 |
19.93 |
| 2026-08-05 12:00 |
16:47:40.70 |
-27:00:06.0 |
HIP 82157 |
19.67 |
| 2026-08-06 00:00 |
16:47:39.10 |
-26:59:59.3 |
HIP 82157 |
19.43 |
| 2026-08-06 12:00 |
16:47:37.54 |
-26:59:52.7 |
HIP 82157 |
19.18 |
| 2026-08-07 00:00 |
16:47:36.00 |
-26:59:46.1 |
HIP 82157 |
18.95 |
| 2026-08-07 12:00 |
16:47:34.49 |
-26:59:39.6 |
HIP 82157 |
18.72 |
| 2026-08-08 00:00 |
16:47:33.01 |
-26:59:33.0 |
HIP 82157 |
18.50 |
| 2026-08-08 12:00 |
16:47:31.56 |
-26:59:26.5 |
HIP 82157 |
18.28 |
| 2026-08-09 00:00 |
16:47:30.14 |
-26:59:20.0 |
HIP 82157 |
18.07 |
| 2026-08-09 12:00 |
16:47:28.74 |
-26:59:13.6 |
HIP 82157 |
17.87 |
| 2026-08-10 00:00 |
16:47:27.38 |
-26:59:07.2 |
HIP 82157 |
17.67 |
| 2026-08-10 12:00 |
16:47:26.04 |
-26:59:00.8 |
HIP 82157 |
17.48 |
| 2026-08-11 00:00 |
16:47:24.74 |
-26:58:54.5 |
HIP 82157 |
17.30 |
| 2026-08-11 12:00 |
16:47:23.46 |
-26:58:48.2 |
HIP 82157 |
17.12 |
| 2026-08-12 00:00 |
16:47:22.21 |
-26:58:42.0 |
HIP 82157 |
16.95 |
| 2026-08-12 12:00 |
16:47:20.99 |
-26:58:35.7 |
HIP 82157 |
16.78 |
| 2026-08-13 00:00 |
16:47:19.80 |
-26:58:29.6 |
HIP 82157 |
16.62 |
| 2026-08-13 12:00 |
16:47:18.65 |
-26:58:23.4 |
HIP 82157 |
16.47 |
| 2026-08-14 00:00 |
16:47:17.52 |
-26:58:17.3 |
HIP 82157 |
16.32 |
| 2026-08-14 12:00 |
16:47:16.42 |
-26:58:11.2 |
HIP 82157 |
16.17 |
| 2026-08-15 00:00 |
16:47:15.35 |
-26:58:05.2 |
HIP 82157 |
16.03 |
| 2026-08-15 12:00 |
16:47:14.31 |
-26:57:59.2 |
HIP 82157 |
15.89 |
| 2026-08-16 00:00 |
16:47:13.30 |
-26:57:53.3 |
HIP 82157 |
15.76 |
| 2026-08-16 12:00 |
16:47:12.33 |
-26:57:47.3 |
HIP 82157 |
15.64 |
| 2026-08-17 00:00 |
16:47:11.38 |
-26:57:41.5 |
HIP 82157 |
15.51 |
| 2026-08-17 12:00 |
16:47:10.46 |
-26:57:35.6 |
HIP 82157 |
15.39 |
| 2026-08-18 00:00 |
16:47:09.57 |
-26:57:29.9 |
HIP 82157 |
15.28 |
| 2026-08-18 12:00 |
16:47:08.72 |
-26:57:24.1 |
HIP 82157 |
15.17 |
| 2026-08-19 00:00 |
16:47:07.89 |
-26:57:18.4 |
HIP 82157 |
15.06 |