C/2012 T6 (Kowalski)
메타데이터
| 항목 |
값 |
| Designation |
C/2012 T6 (Kowalski) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2012-08-26T09:14:54.784320Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:24Z |
| Obs used |
142 |
| NEO |
- |
| M1 |
15.700 |
| K1 |
7.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2012-11-03.0000000 |
| e |
0.87633751 |
| q (au) |
1.775087 |
| a (au) |
14.354288 |
| i (deg) |
33.275501 |
| Ω (om, deg) |
186.220461 |
| ω (w, deg) |
198.098653 |
| M (ma, deg) |
1.243507 |
밝기
산란 + 전체 선형
$$
M_a = (14.029 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.029 |
| n |
6.000 |
| gf |
0.999 |
| gb |
-0.536 |
| k |
0.800 |
| 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) |
| 2026-02-03 00:00 |
12:46:48.19 |
-02:28:19.3 |
HIP 62380 |
23.52 |
| 2026-02-03 12:00 |
12:46:45.98 |
-02:27:58.0 |
HIP 62380 |
23.27 |
| 2026-02-04 00:00 |
12:46:43.72 |
-02:27:36.4 |
HIP 62380 |
23.03 |
| 2026-02-04 12:00 |
12:46:41.42 |
-02:27:14.6 |
HIP 62380 |
22.81 |
| 2026-02-05 00:00 |
12:46:39.09 |
-02:26:52.6 |
HIP 62380 |
22.61 |
| 2026-02-05 12:00 |
12:46:36.72 |
-02:26:30.4 |
HIP 62380 |
22.42 |
| 2026-02-06 00:00 |
12:46:34.30 |
-02:26:07.9 |
HIP 62380 |
22.25 |
| 2026-02-06 12:00 |
12:46:31.85 |
-02:25:45.2 |
HIP 62380 |
22.11 |
| 2026-02-07 00:00 |
12:46:29.36 |
-02:25:22.3 |
HIP 62380 |
21.99 |
| 2026-02-07 12:00 |
12:46:26.84 |
-02:24:59.1 |
HIP 62380 |
21.89 |
| 2026-02-08 00:00 |
12:46:24.27 |
-02:24:35.7 |
HIP 62380 |
21.82 |
| 2026-02-08 12:00 |
12:46:21.67 |
-02:24:12.1 |
HIP 62380 |
21.77 |
| 2026-02-09 00:00 |
12:46:19.03 |
-02:23:48.3 |
HIP 62380 |
21.76 |
| 2026-02-09 12:00 |
12:46:16.35 |
-02:23:24.2 |
HIP 62380 |
21.77 |
| 2026-02-10 00:00 |
12:46:13.63 |
-02:23:00.0 |
HIP 62380 |
21.81 |
| 2026-02-10 12:00 |
12:46:10.88 |
-02:22:35.5 |
HIP 62380 |
21.89 |
| 2026-02-11 00:00 |
12:46:08.09 |
-02:22:10.7 |
HIP 62380 |
21.99 |
| 2026-02-11 12:00 |
12:46:05.27 |
-02:21:45.8 |
HIP 62380 |
22.13 |
| 2026-02-12 00:00 |
12:46:02.40 |
-02:21:20.7 |
HIP 62380 |
22.30 |
| 2026-02-12 12:00 |
12:45:59.51 |
-02:20:55.3 |
HIP 62380 |
22.51 |
| 2026-02-13 00:00 |
12:45:56.57 |
-02:20:29.7 |
HIP 62380 |
22.74 |
| 2026-02-13 12:00 |
12:45:53.60 |
-02:20:04.0 |
HIP 62380 |
23.01 |
| 2026-02-14 00:00 |
12:45:50.60 |
-02:19:38.0 |
HIP 62380 |
23.32 |
| 2026-02-14 12:00 |
12:45:47.56 |
-02:19:11.8 |
HIP 62380 |
23.65 |
| 2026-02-15 00:00 |
12:45:44.48 |
-02:18:45.4 |
HIP 62380 |
24.02 |
| 2026-02-15 12:00 |
12:45:41.37 |
-02:18:18.9 |
HIP 62380 |
24.43 |
| 2026-02-16 00:00 |
12:45:38.23 |
-02:17:52.1 |
HIP 62380 |
24.86 |
| 2026-02-16 12:00 |
12:45:35.06 |
-02:17:25.1 |
HIP 62380 |
25.32 |
| 2026-02-17 00:00 |
12:45:31.84 |
-02:16:57.9 |
HIP 62380 |
25.81 |
| 2026-02-17 12:00 |
12:45:28.60 |
-02:16:30.6 |
HIP 62380 |
26.34 |
| 2026-02-18 00:00 |
12:45:25.32 |
-02:16:03.0 |
HIP 62380 |
26.89 |
| 2026-02-18 12:00 |
12:45:22.02 |
-02:15:35.3 |
HIP 62380 |
27.46 |
| 2026-02-19 00:00 |
12:45:18.67 |
-02:15:07.4 |
HIP 62380 |
28.07 |
| 2026-02-19 12:00 |
12:45:15.30 |
-02:14:39.3 |
HIP 62380 |
28.70 |
| 2026-02-20 00:00 |
12:45:11.90 |
-02:14:11.0 |
HIP 62380 |
29.35 |
| 2026-02-20 12:00 |
12:45:08.46 |
-02:13:42.5 |
HIP 62185 |
29.60 |
| 2026-02-21 00:00 |
12:45:04.99 |
-02:13:13.9 |
HIP 62185 |
29.88 |
| 2026-02-21 12:00 |
12:45:01.49 |
-02:12:45.1 |
HIP 62185 |
30.18 |
| 2026-02-22 00:00 |
12:44:57.97 |
-02:12:16.2 |
HIP 62185 |
30.52 |
| 2026-02-22 12:00 |
12:44:54.41 |
-02:11:47.0 |
HIP 62036 |
29.71 |
| 2026-02-23 00:00 |
12:44:50.82 |
-02:11:17.7 |
HIP 62036 |
28.88 |
| 2026-02-23 12:00 |
12:44:47.20 |
-02:10:48.3 |
HIP 62036 |
28.06 |
| 2026-02-24 00:00 |
12:44:43.56 |
-02:10:18.6 |
HIP 62036 |
27.24 |