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
$$
M_a = (1.931 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
1.931 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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) |
| 2026-03-26 00:00 |
07:31:48.78 |
+25:11:10.4 |
HIP 36483 |
24.75 |
| 2026-03-26 12:00 |
07:31:48.26 |
+25:11:01.5 |
HIP 36483 |
24.75 |
| 2026-03-27 00:00 |
07:31:47.80 |
+25:10:52.5 |
HIP 36483 |
24.77 |
| 2026-03-27 12:00 |
07:31:47.41 |
+25:10:43.4 |
HIP 36483 |
24.80 |
| 2026-03-28 00:00 |
07:31:47.08 |
+25:10:34.1 |
HIP 36483 |
24.85 |
| 2026-03-28 12:00 |
07:31:46.81 |
+25:10:24.7 |
HIP 36483 |
24.91 |
| 2026-03-29 00:00 |
07:31:46.60 |
+25:10:15.2 |
HIP 36483 |
24.98 |
| 2026-03-29 12:00 |
07:31:46.45 |
+25:10:05.5 |
HIP 36483 |
25.06 |
| 2026-03-30 00:00 |
07:31:46.37 |
+25:09:55.7 |
HIP 36483 |
25.16 |
| 2026-03-30 12:00 |
07:31:46.35 |
+25:09:45.8 |
HIP 36483 |
25.26 |
| 2026-03-31 00:00 |
07:31:46.39 |
+25:09:35.7 |
HIP 36483 |
25.39 |
| 2026-03-31 12:00 |
07:31:46.49 |
+25:09:25.5 |
HIP 36483 |
25.52 |
| 2026-04-01 00:00 |
07:31:46.65 |
+25:09:15.2 |
HIP 36483 |
25.66 |
| 2026-04-01 12:00 |
07:31:46.88 |
+25:09:04.8 |
HIP 36483 |
25.82 |
| 2026-04-02 00:00 |
07:31:47.16 |
+25:08:54.2 |
HIP 36483 |
25.99 |
| 2026-04-02 12:00 |
07:31:47.51 |
+25:08:43.5 |
HIP 36483 |
26.17 |
| 2026-04-03 00:00 |
07:31:47.92 |
+25:08:32.6 |
HIP 36483 |
26.36 |
| 2026-04-03 12:00 |
07:31:48.39 |
+25:08:21.7 |
HIP 36483 |
26.57 |
| 2026-04-04 00:00 |
07:31:48.93 |
+25:08:10.6 |
HIP 36483 |
26.78 |
| 2026-04-04 12:00 |
07:31:49.52 |
+25:07:59.4 |
HIP 36483 |
27.01 |
| 2026-04-05 00:00 |
07:31:50.18 |
+25:07:48.0 |
HIP 36483 |
27.25 |
| 2026-04-05 12:00 |
07:31:50.89 |
+25:07:36.6 |
HIP 36483 |
27.50 |
| 2026-04-06 00:00 |
07:31:51.67 |
+25:07:25.0 |
HIP 36483 |
27.76 |
| 2026-04-06 12:00 |
07:31:52.51 |
+25:07:13.3 |
HIP 36483 |
28.03 |
| 2026-04-07 00:00 |
07:31:53.41 |
+25:07:01.4 |
HIP 36483 |
28.31 |
| 2026-04-07 12:00 |
07:31:54.38 |
+25:06:49.5 |
HIP 36483 |
28.61 |
| 2026-04-08 00:00 |
07:31:55.40 |
+25:06:37.4 |
HIP 36483 |
28.92 |
| 2026-04-08 12:00 |
07:31:56.48 |
+25:06:25.2 |
HIP 36483 |
29.23 |
| 2026-04-09 00:00 |
07:31:57.63 |
+25:06:12.8 |
HIP 36483 |
29.56 |
| 2026-04-09 12:00 |
07:31:58.84 |
+25:06:00.4 |
HIP 36765 |
29.58 |
| 2026-04-10 00:00 |
07:32:00.10 |
+25:05:47.8 |
HIP 36765 |
29.48 |
| 2026-04-10 12:00 |
07:32:01.43 |
+25:05:35.1 |
HIP 36765 |
29.38 |
| 2026-04-11 00:00 |
07:32:02.82 |
+25:05:22.3 |
HIP 36765 |
29.27 |
| 2026-04-11 12:00 |
07:32:04.27 |
+25:05:09.4 |
HIP 36765 |
29.16 |
| 2026-04-12 00:00 |
07:32:05.78 |
+25:04:56.3 |
HIP 36765 |
29.04 |
| 2026-04-12 12:00 |
07:32:07.35 |
+25:04:43.1 |
HIP 36765 |
28.92 |
| 2026-04-13 00:00 |
07:32:08.98 |
+25:04:29.8 |
HIP 36765 |
28.80 |
| 2026-04-13 12:00 |
07:32:10.67 |
+25:04:16.4 |
HIP 36765 |
28.67 |
| 2026-04-14 00:00 |
07:32:12.42 |
+25:04:02.9 |
HIP 36765 |
28.54 |
| 2026-04-14 12:00 |
07:32:14.23 |
+25:03:49.3 |
HIP 36765 |
28.41 |
| 2026-04-15 00:00 |
07:32:16.10 |
+25:03:35.5 |
HIP 36765 |
28.28 |
| 2026-04-15 12:00 |
07:32:18.03 |
+25:03:21.6 |
HIP 36765 |
28.15 |
| 2026-04-16 00:00 |
07:32:20.02 |
+25:03:07.6 |
HIP 36765 |
28.02 |