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) |
| 2026-07-29 00:00 |
08:20:36.66 |
-56:57:57.2 |
HIP 40838 |
8.03 |
| 2026-07-29 12:00 |
08:20:41.98 |
-56:58:02.9 |
HIP 40838 |
8.55 |
| 2026-07-30 00:00 |
08:20:47.29 |
-56:58:09.0 |
HIP 40838 |
9.11 |
| 2026-07-30 12:00 |
08:20:52.60 |
-56:58:15.5 |
HIP 40838 |
9.69 |
| 2026-07-31 00:00 |
08:20:57.91 |
-56:58:22.4 |
HIP 40838 |
10.30 |
| 2026-07-31 12:00 |
08:21:03.21 |
-56:58:29.6 |
HIP 40838 |
10.93 |
| 2026-08-01 00:00 |
08:21:08.51 |
-56:58:37.2 |
HIP 40838 |
11.57 |
| 2026-08-01 12:00 |
08:21:13.80 |
-56:58:45.2 |
HIP 40838 |
12.22 |
| 2026-08-02 00:00 |
08:21:19.09 |
-56:58:53.5 |
HIP 40838 |
12.89 |
| 2026-08-02 12:00 |
08:21:24.37 |
-56:59:02.2 |
HIP 40838 |
13.57 |
| 2026-08-03 00:00 |
08:21:29.64 |
-56:59:11.3 |
HIP 40838 |
14.25 |
| 2026-08-03 12:00 |
08:21:34.91 |
-56:59:20.7 |
HIP 41091 |
14.42 |
| 2026-08-04 00:00 |
08:21:40.18 |
-56:59:30.5 |
HIP 41091 |
13.75 |
| 2026-08-04 12:00 |
08:21:45.43 |
-56:59:40.7 |
HIP 41091 |
13.09 |
| 2026-08-05 00:00 |
08:21:50.68 |
-56:59:51.3 |
HIP 41091 |
12.43 |
| 2026-08-05 12:00 |
08:21:55.93 |
-57:00:02.2 |
HIP 41091 |
11.78 |
| 2026-08-06 00:00 |
08:22:01.16 |
-57:00:13.4 |
HIP 41091 |
11.14 |
| 2026-08-06 12:00 |
08:22:06.39 |
-57:00:25.1 |
HIP 41091 |
10.50 |
| 2026-08-07 00:00 |
08:22:11.61 |
-57:00:37.1 |
HIP 41091 |
9.87 |
| 2026-08-07 12:00 |
08:22:16.82 |
-57:00:49.5 |
HIP 41091 |
9.26 |
| 2026-08-08 00:00 |
08:22:22.02 |
-57:01:02.2 |
HIP 41091 |
8.66 |
| 2026-08-08 12:00 |
08:22:27.21 |
-57:01:15.3 |
HIP 41091 |
8.08 |
| 2026-08-09 00:00 |
08:22:32.39 |
-57:01:28.8 |
HIP 41091 |
7.52 |
| 2026-08-09 12:00 |
08:22:37.56 |
-57:01:42.6 |
HIP 41091 |
7.00 |
| 2026-08-10 00:00 |
08:22:42.72 |
-57:01:56.8 |
HIP 41091 |
6.50 |
| 2026-08-10 12:00 |
08:22:47.87 |
-57:02:11.4 |
HIP 41091 |
6.06 |
| 2026-08-11 00:00 |
08:22:53.01 |
-57:02:26.3 |
HIP 41091 |
5.67 |
| 2026-08-11 12:00 |
08:22:58.13 |
-57:02:41.5 |
HIP 41091 |
5.34 |
| 2026-08-12 00:00 |
08:23:03.24 |
-57:02:57.2 |
HIP 41091 |
5.11 |
| 2026-08-12 12:00 |
08:23:08.35 |
-57:03:13.2 |
HIP 41091 |
4.96 |
| 2026-08-13 00:00 |
08:23:13.43 |
-57:03:29.5 |
HIP 41091 |
4.92 |
| 2026-08-13 12:00 |
08:23:18.51 |
-57:03:46.2 |
HIP 41091 |
4.98 |
| 2026-08-14 00:00 |
08:23:23.57 |
-57:04:03.3 |
HIP 41091 |
5.14 |
| 2026-08-14 12:00 |
08:23:28.62 |
-57:04:20.7 |
HIP 41091 |
5.40 |
| 2026-08-15 00:00 |
08:23:33.65 |
-57:04:38.4 |
HIP 41091 |
5.74 |
| 2026-08-15 12:00 |
08:23:38.67 |
-57:04:56.6 |
HIP 41091 |
6.14 |
| 2026-08-16 00:00 |
08:23:43.67 |
-57:05:15.0 |
HIP 41091 |
6.60 |
| 2026-08-16 12:00 |
08:23:48.66 |
-57:05:33.8 |
HIP 41091 |
7.11 |
| 2026-08-17 00:00 |
08:23:53.63 |
-57:05:53.0 |
HIP 41091 |
7.65 |
| 2026-08-17 12:00 |
08:23:58.59 |
-57:06:12.5 |
HIP 41091 |
8.22 |
| 2026-08-18 00:00 |
08:24:03.53 |
-57:06:32.3 |
HIP 41091 |
8.81 |
| 2026-08-18 12:00 |
08:24:08.45 |
-57:06:52.5 |
HIP 41091 |
9.42 |
| 2026-08-19 00:00 |
08:24:13.35 |
-57:07:13.1 |
HIP 41091 |
10.04 |