메타데이터
| 항목 |
값 |
| Designation |
C/2015 T5 (Sheppard-Tholen) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2016-01-24T12:14:36.277440Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:33:15Z |
| Obs used |
22 |
| NEO |
- |
| M1 |
7.700 |
| K1 |
10.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-12-20.0000000 |
| e |
0.66608261 |
| q (au) |
9.338302 |
| a (au) |
27.965906 |
| i (deg) |
11.048354 |
| Ω (om, deg) |
311.192699 |
| ω (w, deg) |
61.838999 |
| M (ma, deg) |
359.763346 |
밝기
산란 + 전체 선형
$$
M_a = (1.877 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
1.877 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
9.997 |
| 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) |
| 2026-06-01 00:00 |
07:39:06.42 |
+24:34:46.9 |
HIP 37180 |
12.08 |
| 2026-06-01 12:00 |
07:39:12.84 |
+24:34:24.8 |
HIP 37180 |
13.51 |
| 2026-06-02 00:00 |
07:39:19.31 |
+24:34:02.7 |
HIP 37180 |
14.97 |
| 2026-06-02 12:00 |
07:39:25.80 |
+24:33:40.5 |
HIP 37180 |
16.45 |
| 2026-06-03 00:00 |
07:39:32.33 |
+24:33:18.2 |
HIP 37180 |
17.94 |
| 2026-06-03 12:00 |
07:39:38.89 |
+24:32:55.9 |
HIP 37180 |
19.44 |
| 2026-06-04 00:00 |
07:39:45.48 |
+24:32:33.5 |
HIP 37269 |
20.66 |
| 2026-06-04 12:00 |
07:39:52.10 |
+24:32:11.1 |
HIP 37269 |
20.93 |
| 2026-06-05 00:00 |
07:39:58.75 |
+24:31:48.7 |
HIP 37269 |
21.31 |
| 2026-06-05 12:00 |
07:40:05.43 |
+24:31:26.1 |
HIP 37269 |
21.80 |
| 2026-06-06 00:00 |
07:40:12.15 |
+24:31:03.5 |
HIP 37269 |
22.39 |
| 2026-06-06 12:00 |
07:40:18.89 |
+24:30:40.9 |
HIP 37269 |
23.07 |
| 2026-06-07 00:00 |
07:40:25.67 |
+24:30:18.2 |
HIP 37269 |
23.85 |
| 2026-06-07 12:00 |
07:40:32.47 |
+24:29:55.5 |
HIP 37269 |
24.71 |
| 2026-06-08 00:00 |
07:40:39.30 |
+24:29:32.7 |
HIP 37269 |
25.64 |
| 2026-06-08 12:00 |
07:40:46.16 |
+24:29:09.9 |
HIP 37269 |
26.64 |
| 2026-06-09 00:00 |
07:40:53.05 |
+24:28:47.0 |
HIP 37269 |
27.71 |
| 2026-06-09 12:00 |
07:40:59.97 |
+24:28:24.0 |
HIP 37269 |
28.83 |
| 2026-06-10 00:00 |
07:41:06.91 |
+24:28:01.1 |
HIP 37517 |
27.79 |
| 2026-06-10 12:00 |
07:41:13.89 |
+24:27:38.0 |
HIP 37517 |
26.78 |
| 2026-06-11 00:00 |
07:41:20.89 |
+24:27:14.9 |
HIP 37517 |
25.83 |
| 2026-06-11 12:00 |
07:41:27.91 |
+24:26:51.8 |
HIP 37517 |
24.95 |
| 2026-06-12 00:00 |
07:41:34.96 |
+24:26:28.7 |
HIP 37517 |
24.15 |
| 2026-06-12 12:00 |
07:41:42.04 |
+24:26:05.4 |
HIP 37517 |
23.43 |
| 2026-06-13 00:00 |
07:41:49.15 |
+24:25:42.2 |
HIP 37517 |
22.81 |
| 2026-06-13 12:00 |
07:41:56.28 |
+24:25:18.9 |
HIP 37517 |
22.30 |
| 2026-06-14 00:00 |
07:42:03.43 |
+24:24:55.6 |
HIP 37517 |
21.91 |
| 2026-06-14 12:00 |
07:42:10.61 |
+24:24:32.2 |
HIP 37517 |
21.64 |
| 2026-06-15 00:00 |
07:42:17.81 |
+24:24:08.7 |
HIP 37517 |
21.49 |
| 2026-06-15 12:00 |
07:42:25.04 |
+24:23:45.3 |
HIP 37517 |
21.48 |
| 2026-06-16 00:00 |
07:42:32.28 |
+24:23:21.8 |
HIP 37691 |
21.40 |
| 2026-06-16 12:00 |
07:42:39.56 |
+24:22:58.2 |
HIP 37691 |
19.73 |
| 2026-06-17 00:00 |
07:42:46.85 |
+24:22:34.7 |
HIP 37691 |
18.06 |
| 2026-06-17 12:00 |
07:42:54.17 |
+24:22:11.1 |
HIP 37691 |
16.39 |
| 2026-06-18 00:00 |
07:43:01.50 |
+24:21:47.4 |
HIP 37691 |
14.73 |
| 2026-06-18 12:00 |
07:43:08.86 |
+24:21:23.7 |
HIP 37691 |
13.09 |
| 2026-06-19 00:00 |
07:43:16.24 |
+24:21:00.0 |
HIP 37691 |
11.45 |
| 2026-06-19 12:00 |
07:43:23.64 |
+24:20:36.3 |
HIP 37691 |
9.85 |
| 2026-06-20 00:00 |
07:43:31.06 |
+24:20:12.5 |
HIP 37691 |
8.30 |
| 2026-06-20 12:00 |
07:43:38.50 |
+24:19:48.7 |
HIP 37691 |
6.82 |
| 2026-06-21 00:00 |
07:43:45.96 |
+24:19:24.9 |
HIP 37691 |
5.51 |
| 2026-06-21 12:00 |
07:43:53.43 |
+24:19:01.0 |
HIP 37691 |
4.50 |
| 2026-06-22 00:00 |
07:44:00.93 |
+24:18:37.1 |
HIP 37691 |
4.03 |