C/2008 J6 (Hill)
메타데이터
| 항목 |
값 |
| Designation |
C/2008 J6 (Hill) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2008-04-10T22:28:26.912640Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:20Z |
| Obs used |
385 |
| NEO |
- |
| M1 |
13.400 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2008-07-07.0000000 |
| e |
1.00213779 |
| q (au) |
2.003509 |
| a (au) |
-937.187180 |
| i (deg) |
44.988370 |
| Ω (om, deg) |
298.179314 |
| ω (w, deg) |
10.700067 |
| M (ma, deg) |
0.002991 |
밝기
산란 + 전체 선형
$$
M_a = (10.018 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.018 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.997 |
| 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) |
| 2026-02-03 00:00 |
07:14:13.67 |
+34:21:33.4 |
HIP 34853 |
19.30 |
| 2026-02-03 12:00 |
07:14:10.21 |
+34:21:32.2 |
HIP 34853 |
18.62 |
| 2026-02-04 00:00 |
07:14:06.76 |
+34:21:30.8 |
HIP 34853 |
17.94 |
| 2026-02-04 12:00 |
07:14:03.34 |
+34:21:29.3 |
HIP 34853 |
17.28 |
| 2026-02-05 00:00 |
07:13:59.92 |
+34:21:27.6 |
HIP 34853 |
16.62 |
| 2026-02-05 12:00 |
07:13:56.53 |
+34:21:25.9 |
HIP 34853 |
15.96 |
| 2026-02-06 00:00 |
07:13:53.16 |
+34:21:24.1 |
HIP 34853 |
15.31 |
| 2026-02-06 12:00 |
07:13:49.80 |
+34:21:22.1 |
HIP 34853 |
14.67 |
| 2026-02-07 00:00 |
07:13:46.46 |
+34:21:20.0 |
HIP 34853 |
14.04 |
| 2026-02-07 12:00 |
07:13:43.14 |
+34:21:17.9 |
HIP 34853 |
13.41 |
| 2026-02-08 00:00 |
07:13:39.84 |
+34:21:15.6 |
HIP 34853 |
12.80 |
| 2026-02-08 12:00 |
07:13:36.57 |
+34:21:13.2 |
HIP 34853 |
12.19 |
| 2026-02-09 00:00 |
07:13:33.31 |
+34:21:10.7 |
HIP 34853 |
11.59 |
| 2026-02-09 12:00 |
07:13:30.07 |
+34:21:08.1 |
HIP 34853 |
11.01 |
| 2026-02-10 00:00 |
07:13:26.85 |
+34:21:05.4 |
HIP 34853 |
10.44 |
| 2026-02-10 12:00 |
07:13:23.65 |
+34:21:02.5 |
HIP 34853 |
9.88 |
| 2026-02-11 00:00 |
07:13:20.47 |
+34:20:59.6 |
HIP 34853 |
9.34 |
| 2026-02-11 12:00 |
07:13:17.32 |
+34:20:56.5 |
HIP 34853 |
8.81 |
| 2026-02-12 00:00 |
07:13:14.18 |
+34:20:53.4 |
HIP 34853 |
8.31 |
| 2026-02-12 12:00 |
07:13:11.07 |
+34:20:50.1 |
HIP 34853 |
7.83 |
| 2026-02-13 00:00 |
07:13:07.98 |
+34:20:46.7 |
HIP 34853 |
7.37 |
| 2026-02-13 12:00 |
07:13:04.91 |
+34:20:43.3 |
HIP 34853 |
6.95 |
| 2026-02-14 00:00 |
07:13:01.87 |
+34:20:39.7 |
HIP 34853 |
6.56 |
| 2026-02-14 12:00 |
07:12:58.84 |
+34:20:36.0 |
HIP 34853 |
6.21 |
| 2026-02-15 00:00 |
07:12:55.84 |
+34:20:32.2 |
HIP 34853 |
5.91 |
| 2026-02-15 12:00 |
07:12:52.87 |
+34:20:28.2 |
HIP 34853 |
5.66 |
| 2026-02-16 00:00 |
07:12:49.92 |
+34:20:24.2 |
HIP 34853 |
5.46 |
| 2026-02-16 12:00 |
07:12:46.99 |
+34:20:20.1 |
HIP 34853 |
5.33 |
| 2026-02-17 00:00 |
07:12:44.08 |
+34:20:15.9 |
HIP 34853 |
5.27 |
| 2026-02-17 12:00 |
07:12:41.20 |
+34:20:11.5 |
HIP 34853 |
5.27 |
| 2026-02-18 00:00 |
07:12:38.35 |
+34:20:07.1 |
HIP 34853 |
5.34 |
| 2026-02-18 12:00 |
07:12:35.52 |
+34:20:02.5 |
HIP 34853 |
5.46 |
| 2026-02-19 00:00 |
07:12:32.71 |
+34:19:57.9 |
HIP 34853 |
5.65 |
| 2026-02-19 12:00 |
07:12:29.93 |
+34:19:53.1 |
HIP 34853 |
5.88 |
| 2026-02-20 00:00 |
07:12:27.18 |
+34:19:48.3 |
HIP 34853 |
6.15 |
| 2026-02-20 12:00 |
07:12:24.45 |
+34:19:43.3 |
HIP 34853 |
6.45 |
| 2026-02-21 00:00 |
07:12:21.75 |
+34:19:38.2 |
HIP 34853 |
6.79 |
| 2026-02-21 12:00 |
07:12:19.07 |
+34:19:33.1 |
HIP 34853 |
7.15 |
| 2026-02-22 00:00 |
07:12:16.42 |
+34:19:27.8 |
HIP 34853 |
7.53 |
| 2026-02-22 12:00 |
07:12:13.80 |
+34:19:22.4 |
HIP 34853 |
7.92 |
| 2026-02-23 00:00 |
07:12:11.20 |
+34:19:16.9 |
HIP 34853 |
8.33 |
| 2026-02-23 12:00 |
07:12:08.63 |
+34:19:11.4 |
HIP 34853 |
8.74 |
| 2026-02-24 00:00 |
07:12:06.09 |
+34:19:05.7 |
HIP 34853 |
9.16 |