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 |
-0.998 |
| 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) |
| 2026-09-20 00:00 |
08:28:37.22 |
-57:39:44.2 |
HIP 41353 |
24.12 |
| 2026-09-20 12:00 |
08:28:40.34 |
-57:40:23.3 |
HIP 41353 |
24.07 |
| 2026-09-21 00:00 |
08:28:43.41 |
-57:41:02.7 |
HIP 41353 |
24.04 |
| 2026-09-21 12:00 |
08:28:46.45 |
-57:41:42.2 |
HIP 41353 |
24.03 |
| 2026-09-22 00:00 |
08:28:49.46 |
-57:42:21.9 |
HIP 41353 |
24.03 |
| 2026-09-22 12:00 |
08:28:52.42 |
-57:43:01.9 |
HIP 41353 |
24.05 |
| 2026-09-23 00:00 |
08:28:55.34 |
-57:43:42.1 |
HIP 41353 |
24.10 |
| 2026-09-23 12:00 |
08:28:58.23 |
-57:44:22.4 |
HIP 41353 |
24.16 |
| 2026-09-24 00:00 |
08:29:01.08 |
-57:45:03.0 |
HIP 41353 |
24.24 |
| 2026-09-24 12:00 |
08:29:03.88 |
-57:45:43.7 |
HIP 41353 |
24.33 |
| 2026-09-25 00:00 |
08:29:06.65 |
-57:46:24.7 |
HIP 41353 |
24.45 |
| 2026-09-25 12:00 |
08:29:09.38 |
-57:47:05.8 |
HIP 41353 |
24.58 |
| 2026-09-26 00:00 |
08:29:12.07 |
-57:47:47.2 |
HIP 41353 |
24.73 |
| 2026-09-26 12:00 |
08:29:14.72 |
-57:48:28.7 |
HIP 41353 |
24.90 |
| 2026-09-27 00:00 |
08:29:17.33 |
-57:49:10.4 |
HIP 41353 |
25.08 |
| 2026-09-27 12:00 |
08:29:19.89 |
-57:49:52.3 |
HIP 41353 |
25.28 |
| 2026-09-28 00:00 |
08:29:22.42 |
-57:50:34.4 |
HIP 41353 |
25.50 |
| 2026-09-28 12:00 |
08:29:24.91 |
-57:51:16.6 |
HIP 41353 |
25.73 |
| 2026-09-29 00:00 |
08:29:27.35 |
-57:51:59.0 |
HIP 41353 |
25.98 |
| 2026-09-29 12:00 |
08:29:29.75 |
-57:52:41.6 |
HIP 41353 |
26.24 |
| 2026-09-30 00:00 |
08:29:32.11 |
-57:53:24.4 |
HIP 41353 |
26.52 |
| 2026-09-30 12:00 |
08:29:34.43 |
-57:54:07.3 |
HIP 41353 |
26.81 |
| 2026-10-01 00:00 |
08:29:36.71 |
-57:54:50.4 |
HIP 41353 |
27.11 |
| 2026-10-01 12:00 |
08:29:38.94 |
-57:55:33.6 |
HIP 41353 |
27.43 |
| 2026-10-02 00:00 |
08:29:41.13 |
-57:56:17.0 |
HIP 41575 |
27.25 |
| 2026-10-02 12:00 |
08:29:43.28 |
-57:57:00.6 |
HIP 41575 |
26.65 |
| 2026-10-03 00:00 |
08:29:45.38 |
-57:57:44.3 |
HIP 41575 |
26.06 |
| 2026-10-03 12:00 |
08:29:47.45 |
-57:58:28.2 |
HIP 41575 |
25.47 |
| 2026-10-04 00:00 |
08:29:49.46 |
-57:59:12.2 |
HIP 41575 |
24.89 |
| 2026-10-04 12:00 |
08:29:51.43 |
-57:59:56.3 |
HIP 41575 |
24.32 |
| 2026-10-05 00:00 |
08:29:53.36 |
-58:00:40.6 |
HIP 41575 |
23.75 |
| 2026-10-05 12:00 |
08:29:55.25 |
-58:01:25.1 |
HIP 41575 |
23.19 |
| 2026-10-06 00:00 |
08:29:57.09 |
-58:02:09.7 |
HIP 41575 |
22.64 |
| 2026-10-06 12:00 |
08:29:58.88 |
-58:02:54.4 |
HIP 41575 |
22.09 |
| 2026-10-07 00:00 |
08:30:00.63 |
-58:03:39.2 |
HIP 41575 |
21.56 |
| 2026-10-07 12:00 |
08:30:02.33 |
-58:04:24.2 |
HIP 41575 |
21.04 |
| 2026-10-08 00:00 |
08:30:03.99 |
-58:05:09.3 |
HIP 41575 |
20.52 |
| 2026-10-08 12:00 |
08:30:05.60 |
-58:05:54.5 |
HIP 41575 |
20.02 |
| 2026-10-09 00:00 |
08:30:07.16 |
-58:06:39.8 |
HIP 41575 |
19.54 |
| 2026-10-09 12:00 |
08:30:08.68 |
-58:07:25.2 |
HIP 41575 |
19.07 |
| 2026-10-10 00:00 |
08:30:10.15 |
-58:08:10.8 |
HIP 41575 |
18.61 |
| 2026-10-10 12:00 |
08:30:11.57 |
-58:08:56.5 |
HIP 41575 |
18.17 |
| 2026-10-11 00:00 |
08:30:12.95 |
-58:09:42.2 |
HIP 41575 |
17.75 |