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) |
| 2026-09-20 00:00 |
12:58:04.59 |
-09:12:13.8 |
HIP 63225 |
20.87 |
| 2026-09-20 12:00 |
12:58:29.35 |
-09:14:53.7 |
HIP 63225 |
26.67 |
| 2026-09-21 00:00 |
12:58:54.15 |
-09:17:33.7 |
HIP 63486 |
26.22 |
| 2026-09-21 12:00 |
12:59:18.98 |
-09:20:14.0 |
HIP 63486 |
22.48 |
| 2026-09-22 00:00 |
12:59:43.83 |
-09:22:54.4 |
HIP 63486 |
20.31 |
| 2026-09-22 12:00 |
13:00:08.71 |
-09:25:34.9 |
HIP 63486 |
20.23 |
| 2026-09-23 00:00 |
13:00:33.62 |
-09:28:15.6 |
HIP 63573 |
19.45 |
| 2026-09-23 12:00 |
13:00:58.56 |
-09:30:56.4 |
HIP 63573 |
12.84 |
| 2026-09-24 00:00 |
13:01:23.53 |
-09:33:37.4 |
HIP 63573 |
6.44 |
| 2026-09-24 12:00 |
13:01:48.52 |
-09:36:18.5 |
HIP 63573 |
2.86 |
| 2026-09-25 00:00 |
13:02:13.54 |
-09:38:59.8 |
HIP 63573 |
8.09 |
| 2026-09-25 12:00 |
13:02:38.58 |
-09:41:41.2 |
HIP 63573 |
14.60 |
| 2026-09-26 00:00 |
13:03:03.65 |
-09:44:22.7 |
HIP 63573 |
21.26 |
| 2026-09-26 12:00 |
13:03:28.74 |
-09:47:04.3 |
HIP 63571 |
27.15 |
| 2026-09-27 00:00 |
13:03:53.86 |
-09:49:46.1 |
HIP 63571 |
33.19 |
| 2026-09-27 12:00 |
13:04:19.00 |
-09:52:27.9 |
HIP 63873 |
31.79 |
| 2026-09-28 00:00 |
13:04:44.16 |
-09:55:09.9 |
HIP 63873 |
26.52 |
| 2026-09-28 12:00 |
13:05:09.34 |
-09:57:52.0 |
HIP 63873 |
22.06 |
| 2026-09-29 00:00 |
13:05:34.55 |
-10:00:34.2 |
HIP 63873 |
19.02 |
| 2026-09-29 12:00 |
13:05:59.78 |
-10:03:16.5 |
HIP 63873 |
18.11 |
| 2026-09-30 00:00 |
13:06:25.03 |
-10:05:58.9 |
HIP 63873 |
19.66 |
| 2026-09-30 12:00 |
13:06:50.30 |
-10:08:41.4 |
HIP 63964 |
19.71 |
| 2026-10-01 00:00 |
13:07:15.59 |
-10:11:24.0 |
HIP 63964 |
19.90 |
| 2026-10-01 12:00 |
13:07:40.90 |
-10:14:06.7 |
HIP 63964 |
22.26 |
| 2026-10-02 00:00 |
13:08:06.22 |
-10:16:49.5 |
HIP 64224 |
24.54 |
| 2026-10-02 12:00 |
13:08:31.57 |
-10:19:32.3 |
HIP 64224 |
18.13 |
| 2026-10-03 00:00 |
13:08:56.94 |
-10:22:15.3 |
HIP 64224 |
12.15 |
| 2026-10-03 12:00 |
13:09:22.32 |
-10:24:58.3 |
HIP 64224 |
7.69 |
| 2026-10-04 00:00 |
13:09:47.72 |
-10:27:41.3 |
HIP 64224 |
7.95 |
| 2026-10-04 12:00 |
13:10:13.14 |
-10:30:24.5 |
HIP 64224 |
12.66 |
| 2026-10-05 00:00 |
13:10:38.57 |
-10:33:07.7 |
HIP 64288 |
15.84 |
| 2026-10-05 12:00 |
13:11:04.02 |
-10:35:51.0 |
HIP 64288 |
15.24 |
| 2026-10-06 00:00 |
13:11:29.49 |
-10:38:34.3 |
HIP 64288 |
17.52 |
| 2026-10-06 12:00 |
13:11:54.96 |
-10:41:17.7 |
HIP 64288 |
21.78 |
| 2026-10-07 00:00 |
13:12:20.45 |
-10:44:01.1 |
HIP 64288 |
27.12 |
| 2026-10-07 12:00 |
13:12:45.96 |
-10:46:44.5 |
HIP 64378 |
31.03 |
| 2026-10-08 00:00 |
13:13:11.47 |
-10:49:28.0 |
HIP 64378 |
32.64 |
| 2026-10-08 12:00 |
13:13:37.00 |
-10:52:11.6 |
HIP 64635 |
32.26 |
| 2026-10-09 00:00 |
13:14:02.54 |
-10:54:55.1 |
HIP 64643 |
29.67 |
| 2026-10-09 12:00 |
13:14:28.09 |
-10:57:38.7 |
HIP 64643 |
24.61 |
| 2026-10-10 00:00 |
13:14:53.65 |
-11:00:22.3 |
HIP 64643 |
20.61 |
| 2026-10-10 12:00 |
13:15:19.21 |
-11:03:05.9 |
HIP 64643 |
18.37 |
| 2026-10-11 00:00 |
13:15:44.79 |
-11:05:49.5 |
HIP 64643 |
18.53 |