메타데이터
| 항목 |
값 |
| Designation |
C/2008 L3 (Hill) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2008-04-22T09:56:00.726720Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:21Z |
| Obs used |
82 |
| NEO |
- |
| M1 |
10.500 |
| K1 |
21.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2008-06-26.0000000 |
| e |
0.99376090 |
| q (au) |
2.011243 |
| a (au) |
322.360884 |
| i (deg) |
100.200796 |
| Ω (om, deg) |
24.185456 |
| ω (w, deg) |
101.814452 |
| M (ma, deg) |
0.010998 |
밝기
산란 + 전체 선형
$$
M_a = (11.825 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.825 |
| n |
6.000 |
| 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) |
| 2026-03-26 00:00 |
08:10:47.29 |
-59:07:35.4 |
HIP 40116 |
9.73 |
| 2026-03-26 12:00 |
08:10:44.19 |
-59:06:50.9 |
HIP 40116 |
10.55 |
| 2026-03-27 00:00 |
08:10:41.14 |
-59:06:06.2 |
HIP 40116 |
11.38 |
| 2026-03-27 12:00 |
08:10:38.15 |
-59:05:21.3 |
HIP 40116 |
12.20 |
| 2026-03-28 00:00 |
08:10:35.21 |
-59:04:36.2 |
HIP 40116 |
13.03 |
| 2026-03-28 12:00 |
08:10:32.32 |
-59:03:51.1 |
HIP 40116 |
13.85 |
| 2026-03-29 00:00 |
08:10:29.49 |
-59:03:05.8 |
HIP 40116 |
14.68 |
| 2026-03-29 12:00 |
08:10:26.70 |
-59:02:20.3 |
HIP 40116 |
15.50 |
| 2026-03-30 00:00 |
08:10:23.97 |
-59:01:34.7 |
HIP 40116 |
16.32 |
| 2026-03-30 12:00 |
08:10:21.29 |
-59:00:49.0 |
HIP 40116 |
17.15 |
| 2026-03-31 00:00 |
08:10:18.67 |
-59:00:03.1 |
HIP 40116 |
17.97 |
| 2026-03-31 12:00 |
08:10:16.10 |
-58:59:17.2 |
HIP 40116 |
18.79 |
| 2026-04-01 00:00 |
08:10:13.57 |
-58:58:31.1 |
HIP 40116 |
19.61 |
| 2026-04-01 12:00 |
08:10:11.11 |
-58:57:44.8 |
HIP 40116 |
20.43 |
| 2026-04-02 00:00 |
08:10:08.69 |
-58:56:58.5 |
HIP 40116 |
21.25 |
| 2026-04-02 12:00 |
08:10:06.33 |
-58:56:12.1 |
HIP 40116 |
22.07 |
| 2026-04-03 00:00 |
08:10:04.02 |
-58:55:25.5 |
HIP 40116 |
22.89 |
| 2026-04-03 12:00 |
08:10:01.76 |
-58:54:38.9 |
HIP 40116 |
23.70 |
| 2026-04-04 00:00 |
08:09:59.56 |
-58:53:52.1 |
HIP 40116 |
24.52 |
| 2026-04-04 12:00 |
08:09:57.41 |
-58:53:05.3 |
HIP 40116 |
25.33 |
| 2026-04-05 00:00 |
08:09:55.32 |
-58:52:18.3 |
HIP 40116 |
26.15 |
| 2026-04-05 12:00 |
08:09:53.27 |
-58:51:31.3 |
HIP 40116 |
26.96 |
| 2026-04-06 00:00 |
08:09:51.28 |
-58:50:44.2 |
HIP 40116 |
27.77 |
| 2026-04-06 12:00 |
08:09:49.35 |
-58:49:57.0 |
HIP 40116 |
28.58 |
| 2026-04-07 00:00 |
08:09:47.46 |
-58:49:09.7 |
HIP 39725 |
28.59 |
| 2026-04-07 12:00 |
08:09:45.63 |
-58:48:22.4 |
HIP 39725 |
27.88 |
| 2026-04-08 00:00 |
08:09:43.86 |
-58:47:35.0 |
HIP 39725 |
27.17 |
| 2026-04-08 12:00 |
08:09:42.13 |
-58:46:47.5 |
HIP 39725 |
26.47 |
| 2026-04-09 00:00 |
08:09:40.46 |
-58:46:00.0 |
HIP 39725 |
25.79 |
| 2026-04-09 12:00 |
08:09:38.85 |
-58:45:12.3 |
HIP 39725 |
25.12 |
| 2026-04-10 00:00 |
08:09:37.29 |
-58:44:24.6 |
HIP 39725 |
24.46 |
| 2026-04-10 12:00 |
08:09:35.78 |
-58:43:36.9 |
HIP 39725 |
23.82 |
| 2026-04-11 00:00 |
08:09:34.32 |
-58:42:49.2 |
HIP 39725 |
23.19 |
| 2026-04-11 12:00 |
08:09:32.92 |
-58:42:01.3 |
HIP 39725 |
22.58 |
| 2026-04-12 00:00 |
08:09:31.58 |
-58:41:13.5 |
HIP 39725 |
22.00 |
| 2026-04-12 12:00 |
08:09:30.28 |
-58:40:25.6 |
HIP 39725 |
21.43 |
| 2026-04-13 00:00 |
08:09:29.04 |
-58:39:37.7 |
HIP 39725 |
20.88 |
| 2026-04-13 12:00 |
08:09:27.86 |
-58:38:49.7 |
HIP 39725 |
20.36 |
| 2026-04-14 00:00 |
08:09:26.72 |
-58:38:01.7 |
HIP 39725 |
19.86 |
| 2026-04-14 12:00 |
08:09:25.65 |
-58:37:13.7 |
HIP 39725 |
19.39 |
| 2026-04-15 00:00 |
08:09:24.62 |
-58:36:25.7 |
HIP 39725 |
18.95 |
| 2026-04-15 12:00 |
08:09:23.65 |
-58:35:37.6 |
HIP 39725 |
18.54 |
| 2026-04-16 00:00 |
08:09:22.73 |
-58:34:49.6 |
HIP 39725 |
18.16 |