C/2012 Q1 (Kowalski)
메타데이터
| 항목 |
값 |
| Designation |
C/2012 Q1 (Kowalski) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2012-02-09T09:27:09.711360Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:20Z |
| Obs used |
196 |
| NEO |
- |
| M1 |
6.600 |
| K1 |
8.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2013-01-30.0000000 |
| e |
0.63712480 |
| q (au) |
9.482233 |
| a (au) |
26.130838 |
| i (deg) |
45.182651 |
| Ω (om, deg) |
184.437292 |
| ω (w, deg) |
139.242426 |
| M (ma, deg) |
2.623876 |
밝기
산란 + 전체 선형
$$
M_a = (-1.358 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
-1.358 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.573 |
| 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) |
| 2026-02-03 00:00 |
04:54:32.06 |
-21:31:00.1 |
HIP 22731 |
18.16 |
| 2026-02-03 12:00 |
04:54:30.02 |
-21:30:14.6 |
HIP 22731 |
18.13 |
| 2026-02-04 00:00 |
04:54:28.03 |
-21:29:28.9 |
HIP 22731 |
18.15 |
| 2026-02-04 12:00 |
04:54:26.08 |
-21:28:42.8 |
HIP 22731 |
18.24 |
| 2026-02-05 00:00 |
04:54:24.19 |
-21:27:56.5 |
HIP 22731 |
18.37 |
| 2026-02-05 12:00 |
04:54:22.34 |
-21:27:09.9 |
HIP 22731 |
18.56 |
| 2026-02-06 00:00 |
04:54:20.54 |
-21:26:23.0 |
HIP 22731 |
18.80 |
| 2026-02-06 12:00 |
04:54:18.79 |
-21:25:35.8 |
HIP 22731 |
19.09 |
| 2026-02-07 00:00 |
04:54:17.08 |
-21:24:48.4 |
HIP 22731 |
19.43 |
| 2026-02-07 12:00 |
04:54:15.43 |
-21:24:00.7 |
HIP 22731 |
19.81 |
| 2026-02-08 00:00 |
04:54:13.82 |
-21:23:12.8 |
HIP 22731 |
20.23 |
| 2026-02-08 12:00 |
04:54:12.27 |
-21:22:24.6 |
HIP 22731 |
20.69 |
| 2026-02-09 00:00 |
04:54:10.76 |
-21:21:36.2 |
HIP 22731 |
21.19 |
| 2026-02-09 12:00 |
04:54:09.30 |
-21:20:47.5 |
HIP 22731 |
21.72 |
| 2026-02-10 00:00 |
04:54:07.89 |
-21:19:58.6 |
HIP 22731 |
22.28 |
| 2026-02-10 12:00 |
04:54:06.54 |
-21:19:09.4 |
HIP 22731 |
22.87 |
| 2026-02-11 00:00 |
04:54:05.23 |
-21:18:20.0 |
HIP 22731 |
23.49 |
| 2026-02-11 12:00 |
04:54:03.97 |
-21:17:30.4 |
HIP 22731 |
24.13 |
| 2026-02-12 00:00 |
04:54:02.76 |
-21:16:40.5 |
HIP 22731 |
24.79 |
| 2026-02-12 12:00 |
04:54:01.61 |
-21:15:50.5 |
HIP 22731 |
25.47 |
| 2026-02-13 00:00 |
04:54:00.50 |
-21:15:00.2 |
HIP 22731 |
26.17 |
| 2026-02-13 12:00 |
04:53:59.44 |
-21:14:09.7 |
HIP 22731 |
26.89 |
| 2026-02-14 00:00 |
04:53:58.44 |
-21:13:19.0 |
HIP 22731 |
27.63 |
| 2026-02-14 12:00 |
04:53:57.48 |
-21:12:28.1 |
HIP 22721 |
28.20 |
| 2026-02-15 00:00 |
04:53:56.58 |
-21:11:37.0 |
HIP 22721 |
27.33 |
| 2026-02-15 12:00 |
04:53:55.73 |
-21:10:45.8 |
HIP 22721 |
26.46 |
| 2026-02-16 00:00 |
04:53:54.93 |
-21:09:54.3 |
HIP 22721 |
25.60 |
| 2026-02-16 12:00 |
04:53:54.18 |
-21:09:02.6 |
HIP 22721 |
24.74 |
| 2026-02-17 00:00 |
04:53:53.48 |
-21:08:10.8 |
HIP 22721 |
23.88 |
| 2026-02-17 12:00 |
04:53:52.83 |
-21:07:18.8 |
HIP 22721 |
23.03 |
| 2026-02-18 00:00 |
04:53:52.24 |
-21:06:26.7 |
HIP 22721 |
22.18 |
| 2026-02-18 12:00 |
04:53:51.69 |
-21:05:34.3 |
HIP 22721 |
21.34 |
| 2026-02-19 00:00 |
04:53:51.20 |
-21:04:41.9 |
HIP 22721 |
20.50 |
| 2026-02-19 12:00 |
04:53:50.76 |
-21:03:49.2 |
HIP 22721 |
19.67 |
| 2026-02-20 00:00 |
04:53:50.37 |
-21:02:56.5 |
HIP 22721 |
18.85 |
| 2026-02-20 12:00 |
04:53:50.03 |
-21:02:03.5 |
HIP 22721 |
18.04 |
| 2026-02-21 00:00 |
04:53:49.75 |
-21:01:10.5 |
HIP 22721 |
17.24 |
| 2026-02-21 12:00 |
04:53:49.52 |
-21:00:17.3 |
HIP 22721 |
16.46 |
| 2026-02-22 00:00 |
04:53:49.33 |
-20:59:24.0 |
HIP 22721 |
15.69 |
| 2026-02-22 12:00 |
04:53:49.20 |
-20:58:30.5 |
HIP 22721 |
14.94 |
| 2026-02-23 00:00 |
04:53:49.12 |
-20:57:37.0 |
HIP 22721 |
14.21 |
| 2026-02-23 12:00 |
04:53:49.10 |
-20:56:43.3 |
HIP 22721 |
13.50 |
| 2026-02-24 00:00 |
04:53:49.12 |
-20:55:49.5 |
HIP 22721 |
12.83 |