메타데이터
| 항목 |
값 |
| Designation |
P/2013 T2 (Schwartz) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2013-06-20T16:25:47.807040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:41Z |
| Obs used |
118 |
| NEO |
- |
| M1 |
14.500 |
| K1 |
13.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2013-10-31.0000000 |
| e |
0.52849640 |
| q (au) |
1.599620 |
| a (au) |
3.392593 |
| i (deg) |
9.352147 |
| Ω (om, deg) |
2.629851 |
| ω (w, deg) |
342.521773 |
| M (ma, deg) |
20.869729 |
밝기
산란 + 전체 선형
$$
M_a = (14.012 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.012 |
| n |
6.000 |
| gf |
0.946 |
| gb |
-0.661 |
| k |
0.968 |
| δ90 |
7.825 |
| 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) |
| 2026-03-26 00:00 |
22:06:01.52 |
-17:34:09.4 |
HIP 108936 |
30.08 |
| 2026-03-26 12:00 |
22:07:16.06 |
-17:26:42.2 |
HIP 109271 |
27.36 |
| 2026-03-27 00:00 |
22:08:30.56 |
-17:19:13.3 |
HIP 109271 |
31.14 |
| 2026-03-27 12:00 |
22:09:45.01 |
-17:11:42.6 |
HIP 109297 |
39.15 |
| 2026-03-28 00:00 |
22:10:59.41 |
-17:04:10.1 |
HIP 109685 |
40.62 |
| 2026-03-28 12:00 |
22:12:13.75 |
-16:56:36.0 |
HIP 109685 |
23.09 |
| 2026-03-29 00:00 |
22:13:28.06 |
-16:49:00.1 |
HIP 109685 |
12.76 |
| 2026-03-29 12:00 |
22:14:42.31 |
-16:41:22.5 |
HIP 109685 |
23.24 |
| 2026-03-30 00:00 |
22:15:56.51 |
-16:33:43.2 |
HIP 110004 |
16.79 |
| 2026-03-30 12:00 |
22:17:10.66 |
-16:26:02.2 |
HIP 110004 |
5.65 |
| 2026-03-31 00:00 |
22:18:24.77 |
-16:18:19.6 |
HIP 110176 |
9.06 |
| 2026-03-31 12:00 |
22:19:38.82 |
-16:10:35.3 |
HIP 110176 |
14.70 |
| 2026-04-01 00:00 |
22:20:52.83 |
-16:02:49.4 |
HIP 110176 |
33.20 |
| 2026-04-01 12:00 |
22:22:06.79 |
-15:55:01.8 |
HIP 110537 |
20.94 |
| 2026-04-02 00:00 |
22:23:20.70 |
-15:47:12.6 |
HIP 110537 |
11.16 |
| 2026-04-02 12:00 |
22:24:34.56 |
-15:39:21.8 |
HIP 110689 |
14.06 |
| 2026-04-03 00:00 |
22:25:48.38 |
-15:31:29.3 |
HIP 110689 |
6.07 |
| 2026-04-03 12:00 |
22:27:02.14 |
-15:23:35.3 |
HIP 110701 |
18.92 |
| 2026-04-04 00:00 |
22:28:15.86 |
-15:15:39.8 |
HIP 110701 |
37.03 |
| 2026-04-04 12:00 |
22:29:29.52 |
-15:07:42.6 |
HIP 111086 |
34.56 |
| 2026-04-05 00:00 |
22:30:43.14 |
-14:59:44.0 |
HIP 111086 |
25.37 |
| 2026-04-05 12:00 |
22:31:56.71 |
-14:51:43.8 |
HIP 111141 |
22.70 |
| 2026-04-06 00:00 |
22:33:10.23 |
-14:43:42.0 |
HIP 111424 |
29.83 |
| 2026-04-06 12:00 |
22:34:23.71 |
-14:35:38.8 |
HIP 111424 |
31.45 |
| 2026-04-07 00:00 |
22:35:37.13 |
-14:27:34.1 |
HIP 111646 |
22.71 |
| 2026-04-07 12:00 |
22:36:50.50 |
-14:19:27.9 |
HIP 111646 |
18.58 |
| 2026-04-08 00:00 |
22:38:03.83 |
-14:11:20.2 |
HIP 111777 |
9.95 |
| 2026-04-08 12:00 |
22:39:17.11 |
-14:03:11.1 |
HIP 111790 |
10.33 |
| 2026-04-09 00:00 |
22:40:30.33 |
-13:55:00.6 |
HIP 111979 |
7.29 |
| 2026-04-09 12:00 |
22:41:43.51 |
-13:46:48.7 |
HIP 111979 |
12.32 |
| 2026-04-10 00:00 |
22:42:56.64 |
-13:38:35.3 |
HIP 111979 |
31.89 |
| 2026-04-10 12:00 |
22:44:09.72 |
-13:30:20.6 |
HIP 112412 |
34.63 |
| 2026-04-11 00:00 |
22:45:22.75 |
-13:22:04.5 |
HIP 112352 |
21.69 |
| 2026-04-11 12:00 |
22:46:35.73 |
-13:13:47.0 |
HIP 112352 |
21.40 |
| 2026-04-12 00:00 |
22:47:48.66 |
-13:05:28.2 |
HIP 112352 |
34.85 |
| 2026-04-12 12:00 |
22:49:01.54 |
-12:57:08.1 |
HIP 112799 |
27.46 |
| 2026-04-13 00:00 |
22:50:14.36 |
-12:48:46.7 |
HIP 112799 |
8.74 |
| 2026-04-13 12:00 |
22:51:27.14 |
-12:40:24.0 |
HIP 112799 |
12.98 |
| 2026-04-14 00:00 |
22:52:39.87 |
-12:32:00.0 |
HIP 113085 |
29.62 |
| 2026-04-14 12:00 |
22:53:52.54 |
-12:23:34.8 |
HIP 113085 |
12.67 |
| 2026-04-15 00:00 |
22:55:05.17 |
-12:15:08.4 |
HIP 113085 |
14.67 |
| 2026-04-15 12:00 |
22:56:17.74 |
-12:06:40.7 |
HIP 113264 |
17.57 |
| 2026-04-16 00:00 |
22:57:30.26 |
-11:58:11.8 |
HIP 113264 |
32.59 |