485P/Sheppard-Tholen
메타데이터
| 항목 |
값 |
| Designation |
485P/Sheppard-Tholen |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2005-10-10T02:23:33.267840Z |
| Orbit solution date (soln_date, UTC) |
2024-10-10T17:21:52Z |
| Obs used |
12 |
| NEO |
- |
| M1 |
6.600 |
| K1 |
19.250 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2006-01-02T08:50:54.816000Z |
| Discovery magnitude (MPC) |
20.30 V |
| Discovery observatory (MPC) |
G96 · Mt. Lemmon Survey |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2009-04-12.0000000 |
| e |
0.41586197 |
| q (au) |
3.995838 |
| a (au) |
6.840572 |
| i (deg) |
10.009723 |
| Ω (om, deg) |
261.841751 |
| ω (w, deg) |
195.918921 |
| M (ma, deg) |
70.508521 |
밝기
산란 + 전체 선형
$$
M_a = (9.234 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.234 |
| n |
6.000 |
| gf |
0.938 |
| gb |
-0.857 |
| k |
1.000 |
| δ90 |
3.014 |
| 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 |
13:13:44.11 |
-18:29:17.5 |
HIP 64520 |
20.70 |
| 2026-02-03 12:00 |
13:13:43.60 |
-18:29:57.5 |
HIP 64520 |
20.02 |
| 2026-02-04 00:00 |
13:13:42.92 |
-18:30:36.4 |
HIP 64520 |
19.35 |
| 2026-02-04 12:00 |
13:13:42.07 |
-18:31:14.2 |
HIP 64520 |
18.70 |
| 2026-02-05 00:00 |
13:13:41.06 |
-18:31:50.9 |
HIP 64520 |
18.05 |
| 2026-02-05 12:00 |
13:13:39.88 |
-18:32:26.6 |
HIP 64520 |
17.42 |
| 2026-02-06 00:00 |
13:13:38.53 |
-18:33:01.1 |
HIP 64520 |
16.79 |
| 2026-02-06 12:00 |
13:13:37.01 |
-18:33:34.6 |
HIP 64520 |
16.19 |
| 2026-02-07 00:00 |
13:13:35.33 |
-18:34:06.9 |
HIP 64520 |
15.60 |
| 2026-02-07 12:00 |
13:13:33.48 |
-18:34:38.2 |
HIP 64520 |
15.03 |
| 2026-02-08 00:00 |
13:13:31.46 |
-18:35:08.3 |
HIP 64520 |
14.49 |
| 2026-02-08 12:00 |
13:13:29.28 |
-18:35:37.3 |
HIP 64520 |
13.97 |
| 2026-02-09 00:00 |
13:13:26.93 |
-18:36:05.2 |
HIP 64520 |
13.50 |
| 2026-02-09 12:00 |
13:13:24.41 |
-18:36:32.0 |
HIP 64520 |
13.06 |
| 2026-02-10 00:00 |
13:13:21.73 |
-18:36:57.6 |
HIP 64520 |
12.68 |
| 2026-02-10 12:00 |
13:13:18.88 |
-18:37:22.1 |
HIP 64520 |
12.36 |
| 2026-02-11 00:00 |
13:13:15.87 |
-18:37:45.5 |
HIP 64520 |
12.11 |
| 2026-02-11 12:00 |
13:13:12.69 |
-18:38:07.7 |
HIP 64520 |
11.94 |
| 2026-02-12 00:00 |
13:13:09.35 |
-18:38:28.7 |
HIP 64520 |
11.85 |
| 2026-02-12 12:00 |
13:13:05.84 |
-18:38:48.7 |
HIP 64520 |
11.86 |
| 2026-02-13 00:00 |
13:13:02.17 |
-18:39:07.4 |
HIP 64520 |
11.98 |
| 2026-02-13 12:00 |
13:12:58.34 |
-18:39:25.0 |
HIP 64520 |
12.20 |
| 2026-02-14 00:00 |
13:12:54.34 |
-18:39:41.5 |
HIP 64520 |
12.53 |
| 2026-02-14 12:00 |
13:12:50.18 |
-18:39:56.8 |
HIP 64520 |
12.97 |
| 2026-02-15 00:00 |
13:12:45.86 |
-18:40:10.9 |
HIP 64520 |
13.51 |
| 2026-02-15 12:00 |
13:12:41.38 |
-18:40:23.9 |
HIP 64520 |
14.15 |
| 2026-02-16 00:00 |
13:12:36.74 |
-18:40:35.6 |
HIP 64520 |
14.88 |
| 2026-02-16 12:00 |
13:12:31.94 |
-18:40:46.2 |
HIP 64520 |
15.70 |
| 2026-02-17 00:00 |
13:12:26.98 |
-18:40:55.7 |
HIP 64520 |
16.61 |
| 2026-02-17 12:00 |
13:12:21.86 |
-18:41:03.9 |
HIP 64520 |
17.58 |
| 2026-02-18 00:00 |
13:12:16.58 |
-18:41:11.0 |
HIP 64520 |
18.63 |
| 2026-02-18 12:00 |
13:12:11.15 |
-18:41:16.9 |
HIP 64520 |
19.75 |
| 2026-02-19 00:00 |
13:12:05.57 |
-18:41:21.6 |
HIP 64520 |
20.92 |
| 2026-02-19 12:00 |
13:11:59.82 |
-18:41:25.1 |
HIP 64520 |
22.16 |
| 2026-02-20 00:00 |
13:11:53.93 |
-18:41:27.4 |
HIP 64520 |
23.45 |
| 2026-02-20 12:00 |
13:11:47.88 |
-18:41:28.6 |
HIP 64266 |
23.88 |
| 2026-02-21 00:00 |
13:11:41.68 |
-18:41:28.5 |
HIP 64266 |
22.62 |
| 2026-02-21 12:00 |
13:11:35.33 |
-18:41:27.3 |
HIP 64266 |
21.33 |
| 2026-02-22 00:00 |
13:11:28.83 |
-18:41:24.9 |
HIP 64266 |
20.04 |
| 2026-02-22 12:00 |
13:11:22.18 |
-18:41:21.3 |
HIP 64266 |
18.74 |
| 2026-02-23 00:00 |
13:11:15.39 |
-18:41:16.5 |
HIP 64266 |
17.45 |
| 2026-02-23 12:00 |
13:11:08.45 |
-18:41:10.5 |
HIP 64266 |
16.19 |
| 2026-02-24 00:00 |
13:11:01.36 |
-18:41:03.3 |
HIP 64266 |
14.95 |