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 |
1.000 |
| 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) |
| 2026-09-20 00:00 |
12:39:40.46 |
-01:24:20.2 |
HIP 61726 |
11.84 |
| 2026-09-20 12:00 |
12:39:45.39 |
-01:24:48.8 |
HIP 61726 |
12.38 |
| 2026-09-21 00:00 |
12:39:50.32 |
-01:25:17.4 |
HIP 61726 |
13.03 |
| 2026-09-21 12:00 |
12:39:55.26 |
-01:25:46.0 |
HIP 61726 |
13.77 |
| 2026-09-22 00:00 |
12:40:00.21 |
-01:26:14.6 |
HIP 61726 |
14.60 |
| 2026-09-22 12:00 |
12:40:05.16 |
-01:26:43.2 |
HIP 61726 |
15.50 |
| 2026-09-23 00:00 |
12:40:10.12 |
-01:27:11.8 |
HIP 61726 |
16.46 |
| 2026-09-23 12:00 |
12:40:15.09 |
-01:27:40.5 |
HIP 61726 |
17.47 |
| 2026-09-24 00:00 |
12:40:20.07 |
-01:28:09.1 |
HIP 61726 |
18.53 |
| 2026-09-24 12:00 |
12:40:25.05 |
-01:28:37.8 |
HIP 61941 |
18.81 |
| 2026-09-25 00:00 |
12:40:30.03 |
-01:29:06.5 |
HIP 61941 |
17.62 |
| 2026-09-25 12:00 |
12:40:35.03 |
-01:29:35.1 |
HIP 61941 |
16.45 |
| 2026-09-26 00:00 |
12:40:40.02 |
-01:30:03.8 |
HIP 61941 |
15.31 |
| 2026-09-26 12:00 |
12:40:45.03 |
-01:30:32.5 |
HIP 61941 |
14.20 |
| 2026-09-27 00:00 |
12:40:50.03 |
-01:31:01.2 |
HIP 61941 |
13.13 |
| 2026-09-27 12:00 |
12:40:55.04 |
-01:31:29.8 |
HIP 61941 |
12.11 |
| 2026-09-28 00:00 |
12:41:00.06 |
-01:31:58.5 |
HIP 61941 |
11.17 |
| 2026-09-28 12:00 |
12:41:05.08 |
-01:32:27.1 |
HIP 61941 |
10.31 |
| 2026-09-29 00:00 |
12:41:10.10 |
-01:32:55.8 |
HIP 61941 |
9.56 |
| 2026-09-29 12:00 |
12:41:15.13 |
-01:33:24.4 |
HIP 61941 |
8.95 |
| 2026-09-30 00:00 |
12:41:20.16 |
-01:33:53.0 |
HIP 61941 |
8.51 |
| 2026-09-30 12:00 |
12:41:25.19 |
-01:34:21.6 |
HIP 61941 |
8.26 |
| 2026-10-01 00:00 |
12:41:30.23 |
-01:34:50.2 |
HIP 61941 |
8.24 |
| 2026-10-01 12:00 |
12:41:35.27 |
-01:35:18.8 |
HIP 61941 |
8.43 |
| 2026-10-02 00:00 |
12:41:40.31 |
-01:35:47.4 |
HIP 61941 |
8.82 |
| 2026-10-02 12:00 |
12:41:45.35 |
-01:36:15.9 |
HIP 61941 |
9.39 |
| 2026-10-03 00:00 |
12:41:50.39 |
-01:36:44.4 |
HIP 61941 |
10.11 |
| 2026-10-03 12:00 |
12:41:55.44 |
-01:37:12.9 |
HIP 61941 |
10.95 |
| 2026-10-04 00:00 |
12:42:00.48 |
-01:37:41.4 |
HIP 61941 |
11.88 |
| 2026-10-04 12:00 |
12:42:05.53 |
-01:38:09.8 |
HIP 61941 |
12.88 |
| 2026-10-05 00:00 |
12:42:10.58 |
-01:38:38.2 |
HIP 61941 |
13.94 |
| 2026-10-05 12:00 |
12:42:15.62 |
-01:39:06.5 |
HIP 61941 |
15.05 |
| 2026-10-06 00:00 |
12:42:20.67 |
-01:39:34.9 |
HIP 61941 |
16.20 |
| 2026-10-06 12:00 |
12:42:25.72 |
-01:40:03.2 |
HIP 61941 |
17.37 |
| 2026-10-07 00:00 |
12:42:30.76 |
-01:40:31.4 |
HIP 62103 |
17.82 |
| 2026-10-07 12:00 |
12:42:35.81 |
-01:40:59.6 |
HIP 62103 |
16.81 |
| 2026-10-08 00:00 |
12:42:40.85 |
-01:41:27.8 |
HIP 62103 |
15.85 |
| 2026-10-08 12:00 |
12:42:45.89 |
-01:41:55.9 |
HIP 62103 |
14.95 |
| 2026-10-09 00:00 |
12:42:50.93 |
-01:42:24.0 |
HIP 62103 |
14.11 |
| 2026-10-09 12:00 |
12:42:55.96 |
-01:42:52.0 |
HIP 62103 |
13.37 |
| 2026-10-10 00:00 |
12:43:01.00 |
-01:43:20.0 |
HIP 62103 |
12.72 |
| 2026-10-10 12:00 |
12:43:06.02 |
-01:43:47.9 |
HIP 62103 |
12.18 |
| 2026-10-11 00:00 |
12:43:11.05 |
-01:44:15.7 |
HIP 62103 |
11.77 |