메타데이터
| 항목 |
값 |
| Designation |
384P/Kowalski |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2019-10-11T09:33:16.280640Z |
| Orbit solution date (soln_date, UTC) |
2025-02-13T09:13:14Z |
| Obs used |
740 |
| NEO |
Yes |
| M1 |
20.000 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2019-04-27.0000000 |
| e |
0.61538477 |
| q (au) |
1.116494 |
| a (au) |
2.902887 |
| i (deg) |
7.280738 |
| Ω (om, deg) |
354.239718 |
| ω (w, deg) |
37.622709 |
| M (ma, deg) |
326.641274 |
밝기
산란 + 전체 선형
$$
M_a = (19.277 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
19.277 |
| n |
6.000 |
| gf |
0.800 |
| gb |
-0.716 |
| k |
0.856 |
| δ90 |
2.133 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
12:34:25.51 |
-06:24:27.6 |
HIP 61285 |
16.47 |
| 2026-03-26 12:00 |
12:34:01.40 |
-06:22:19.2 |
HIP 61285 |
13.62 |
| 2026-03-27 00:00 |
12:33:37.29 |
-06:20:10.4 |
HIP 61285 |
13.45 |
| 2026-03-27 12:00 |
12:33:13.18 |
-06:18:01.3 |
HIP 61285 |
16.05 |
| 2026-03-28 00:00 |
12:32:49.07 |
-06:15:51.9 |
HIP 61285 |
20.37 |
| 2026-03-28 12:00 |
12:32:24.98 |
-06:13:42.3 |
HIP 61285 |
25.57 |
| 2026-03-29 00:00 |
12:32:00.89 |
-06:11:32.4 |
HIP 61161 |
24.21 |
| 2026-03-29 12:00 |
12:31:36.83 |
-06:09:22.3 |
HIP 61161 |
22.61 |
| 2026-03-30 00:00 |
12:31:12.78 |
-06:07:12.0 |
HIP 60987 |
18.53 |
| 2026-03-30 12:00 |
12:30:48.76 |
-06:05:01.5 |
HIP 60987 |
12.18 |
| 2026-03-31 00:00 |
12:30:24.77 |
-06:02:50.9 |
HIP 60987 |
5.85 |
| 2026-03-31 12:00 |
12:30:00.82 |
-06:00:40.1 |
HIP 60987 |
0.78 |
| 2026-04-01 00:00 |
12:29:36.90 |
-05:58:29.3 |
HIP 60987 |
6.88 |
| 2026-04-01 12:00 |
12:29:13.02 |
-05:56:18.4 |
HIP 60987 |
13.20 |
| 2026-04-02 00:00 |
12:28:49.19 |
-05:54:07.4 |
HIP 60987 |
19.51 |
| 2026-04-02 12:00 |
12:28:25.41 |
-05:51:56.5 |
HIP 60987 |
25.81 |
| 2026-04-03 00:00 |
12:28:01.69 |
-05:49:45.5 |
HIP 60727 |
23.26 |
| 2026-04-03 12:00 |
12:27:38.02 |
-05:47:34.6 |
HIP 60727 |
17.37 |
| 2026-04-04 00:00 |
12:27:14.41 |
-05:45:23.7 |
HIP 60727 |
11.90 |
| 2026-04-04 12:00 |
12:26:50.87 |
-05:43:13.0 |
HIP 60727 |
7.73 |
| 2026-04-05 00:00 |
12:26:27.40 |
-05:41:02.3 |
HIP 60727 |
7.48 |
| 2026-04-05 12:00 |
12:26:04.00 |
-05:38:51.8 |
HIP 60727 |
11.38 |
| 2026-04-06 00:00 |
12:25:40.68 |
-05:36:41.4 |
HIP 60727 |
16.72 |
| 2026-04-06 12:00 |
12:25:17.44 |
-05:34:31.2 |
HIP 60727 |
22.48 |
| 2026-04-07 00:00 |
12:24:54.29 |
-05:32:21.2 |
HIP 60399 |
28.23 |
| 2026-04-07 12:00 |
12:24:31.22 |
-05:30:11.5 |
HIP 60399 |
22.90 |
| 2026-04-08 00:00 |
12:24:08.24 |
-05:28:02.0 |
HIP 60399 |
18.11 |
| 2026-04-08 12:00 |
12:23:45.36 |
-05:25:52.8 |
HIP 60399 |
14.37 |
| 2026-04-09 00:00 |
12:23:22.58 |
-05:23:43.9 |
HIP 60399 |
12.62 |
| 2026-04-09 12:00 |
12:22:59.91 |
-05:21:35.3 |
HIP 60399 |
13.61 |
| 2026-04-10 00:00 |
12:22:37.34 |
-05:19:27.1 |
HIP 60399 |
16.84 |
| 2026-04-10 12:00 |
12:22:14.88 |
-05:17:19.3 |
HIP 60399 |
21.29 |
| 2026-04-11 00:00 |
12:21:52.54 |
-05:15:11.8 |
HIP 60399 |
26.33 |
| 2026-04-11 12:00 |
12:21:30.31 |
-05:13:04.8 |
HIP 60418 |
29.96 |
| 2026-04-12 00:00 |
12:21:08.21 |
-05:10:58.3 |
HIP 60418 |
34.04 |
| 2026-04-12 12:00 |
12:20:46.22 |
-05:08:52.3 |
HIP 60006 |
36.09 |
| 2026-04-13 00:00 |
12:20:24.37 |
-05:06:46.7 |
HIP 60006 |
30.37 |
| 2026-04-13 12:00 |
12:20:02.65 |
-05:04:41.7 |
HIP 60006 |
24.72 |
| 2026-04-14 00:00 |
12:19:41.07 |
-05:02:37.2 |
HIP 60006 |
19.20 |
| 2026-04-14 12:00 |
12:19:19.62 |
-05:00:33.4 |
HIP 60006 |
13.91 |
| 2026-04-15 00:00 |
12:18:58.31 |
-04:58:30.1 |
HIP 60006 |
9.18 |
| 2026-04-15 12:00 |
12:18:37.15 |
-04:56:27.4 |
HIP 60006 |
6.33 |
| 2026-04-16 00:00 |
12:18:16.14 |
-04:54:25.4 |
HIP 60006 |
7.71 |