메타데이터
| 항목 |
값 |
| Designation |
P/2010 H2 (Vales) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2010-03-09T08:27:45.460800Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:42Z |
| Obs used |
1631 |
| NEO |
- |
| M1 |
7.000 |
| K1 |
10.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2010-05-08.0000000 |
| e |
0.19290772 |
| q (au) |
3.107734 |
| a (au) |
3.850532 |
| i (deg) |
14.252912 |
| Ω (om, deg) |
64.308899 |
| ω (w, deg) |
130.123335 |
| M (ma, deg) |
7.780625 |
밝기
산란 + 전체 선형
$$
M_a = (6.977 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
6.977 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
18:08:46.02 |
-33:57:41.0 |
HIP 88971 |
12.62 |
| 2026-09-20 12:00 |
18:09:03.54 |
-33:57:04.5 |
HIP 88971 |
10.16 |
| 2026-09-21 00:00 |
18:09:21.31 |
-33:56:28.0 |
HIP 88971 |
8.59 |
| 2026-09-21 12:00 |
18:09:39.33 |
-33:55:51.3 |
HIP 88971 |
8.51 |
| 2026-09-22 00:00 |
18:09:57.60 |
-33:55:14.5 |
HIP 89066 |
9.15 |
| 2026-09-22 12:00 |
18:10:16.11 |
-33:54:37.5 |
HIP 89066 |
5.34 |
| 2026-09-23 00:00 |
18:10:34.86 |
-33:54:00.5 |
HIP 89066 |
1.81 |
| 2026-09-23 12:00 |
18:10:53.85 |
-33:53:23.3 |
HIP 89066 |
3.06 |
| 2026-09-24 00:00 |
18:11:13.08 |
-33:52:46.0 |
HIP 89086 |
6.02 |
| 2026-09-24 12:00 |
18:11:32.55 |
-33:52:08.6 |
HIP 89086 |
8.77 |
| 2026-09-25 00:00 |
18:11:52.26 |
-33:51:31.1 |
HIP 89086 |
12.33 |
| 2026-09-25 12:00 |
18:12:12.20 |
-33:50:53.5 |
HIP 89189 |
13.29 |
| 2026-09-26 00:00 |
18:12:32.37 |
-33:50:15.7 |
HIP 89189 |
14.88 |
| 2026-09-26 12:00 |
18:12:52.77 |
-33:49:37.8 |
HIP 89189 |
17.41 |
| 2026-09-27 00:00 |
18:13:13.41 |
-33:48:59.7 |
HIP 89321 |
19.53 |
| 2026-09-27 12:00 |
18:13:34.26 |
-33:48:21.6 |
HIP 89321 |
18.45 |
| 2026-09-28 00:00 |
18:13:55.35 |
-33:47:43.3 |
HIP 89423 |
18.03 |
| 2026-09-28 12:00 |
18:14:16.66 |
-33:47:04.8 |
HIP 89423 |
14.48 |
| 2026-09-29 00:00 |
18:14:38.19 |
-33:46:26.2 |
HIP 89423 |
11.57 |
| 2026-09-29 12:00 |
18:14:59.95 |
-33:45:47.5 |
HIP 89423 |
9.94 |
| 2026-09-30 00:00 |
18:15:21.92 |
-33:45:08.7 |
HIP 89423 |
10.30 |
| 2026-09-30 12:00 |
18:15:44.11 |
-33:44:29.7 |
HIP 89423 |
12.52 |
| 2026-10-01 00:00 |
18:16:06.52 |
-33:43:50.5 |
HIP 89423 |
15.88 |
| 2026-10-01 12:00 |
18:16:29.15 |
-33:43:11.2 |
HIP 89423 |
19.83 |
| 2026-10-02 00:00 |
18:16:51.99 |
-33:42:31.8 |
HIP 89660 |
22.44 |
| 2026-10-02 12:00 |
18:17:15.04 |
-33:41:52.2 |
HIP 89660 |
19.59 |
| 2026-10-03 00:00 |
18:17:38.31 |
-33:41:12.5 |
HIP 89660 |
17.64 |
| 2026-10-03 12:00 |
18:18:01.78 |
-33:40:32.6 |
HIP 89660 |
16.92 |
| 2026-10-04 00:00 |
18:18:25.47 |
-33:39:52.5 |
HIP 89660 |
17.63 |
| 2026-10-04 12:00 |
18:18:49.36 |
-33:39:12.3 |
HIP 89660 |
19.64 |
| 2026-10-05 00:00 |
18:19:13.46 |
-33:38:31.9 |
HIP 89660 |
22.65 |
| 2026-10-05 12:00 |
18:19:37.77 |
-33:37:51.3 |
HIP 89922 |
24.14 |
| 2026-10-06 00:00 |
18:20:02.27 |
-33:37:10.6 |
HIP 89984 |
19.93 |
| 2026-10-06 12:00 |
18:20:26.98 |
-33:36:29.7 |
HIP 89984 |
14.80 |
| 2026-10-07 00:00 |
18:20:51.90 |
-33:35:48.6 |
HIP 89984 |
9.72 |
| 2026-10-07 12:00 |
18:21:17.01 |
-33:35:07.3 |
HIP 89984 |
4.91 |
| 2026-10-08 00:00 |
18:21:42.32 |
-33:34:25.9 |
HIP 89984 |
3.09 |
| 2026-10-08 12:00 |
18:22:07.82 |
-33:33:44.3 |
HIP 89984 |
7.22 |
| 2026-10-09 00:00 |
18:22:33.53 |
-33:33:02.5 |
HIP 89984 |
12.38 |
| 2026-10-09 12:00 |
18:22:59.42 |
-33:32:20.5 |
HIP 89984 |
17.72 |
| 2026-10-10 00:00 |
18:23:25.51 |
-33:31:38.3 |
HIP 90166 |
18.08 |
| 2026-10-10 12:00 |
18:23:51.79 |
-33:30:56.0 |
HIP 90166 |
16.10 |
| 2026-10-11 00:00 |
18:24:18.25 |
-33:30:13.4 |
HIP 90166 |
15.92 |