메타데이터
| 항목 |
값 |
| Designation |
444P/WISE-PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2022-07-10T08:57:56.568960Z |
| Orbit solution date (soln_date, UTC) |
2024-10-10T17:30:16Z |
| Obs used |
247 |
| NEO |
- |
| M1 |
16.700 |
| K1 |
9.250 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2010-06-09T02:52:48.864000Z |
| Discovery magnitude (MPC) |
- |
| Discovery observatory (MPC) |
C51 · WISE |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2022-03-11.0000000 |
| e |
0.57029119 |
| q (au) |
1.473180 |
| a (au) |
3.428321 |
| i (deg) |
22.124438 |
| Ω (om, deg) |
89.406707 |
| ω (w, deg) |
170.888063 |
| M (ma, deg) |
341.154570 |
밝기
산란 + 전체 선형
$$
M_a = (16.117 + 4.549\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
16.117 |
| n |
4.549 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
0.943 |
| δ90 |
1.000 |
| 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 |
07:31:27.66 |
+26:22:31.4 |
HIP 36601 |
5.77 |
| 2026-09-20 12:00 |
07:31:45.13 |
+26:22:56.4 |
HIP 36601 |
4.99 |
| 2026-09-21 00:00 |
07:32:02.46 |
+26:23:21.8 |
HIP 36601 |
6.86 |
| 2026-09-21 12:00 |
07:32:19.66 |
+26:23:47.7 |
HIP 36601 |
9.95 |
| 2026-09-22 00:00 |
07:32:36.73 |
+26:24:14.0 |
HIP 36601 |
13.43 |
| 2026-09-22 12:00 |
07:32:53.67 |
+26:24:40.8 |
HIP 36601 |
17.03 |
| 2026-09-23 00:00 |
07:33:10.47 |
+26:25:08.1 |
HIP 36725 |
18.31 |
| 2026-09-23 12:00 |
07:33:27.13 |
+26:25:35.8 |
HIP 36725 |
19.04 |
| 2026-09-24 00:00 |
07:33:43.65 |
+26:26:03.9 |
HIP 36725 |
20.45 |
| 2026-09-24 12:00 |
07:34:00.04 |
+26:26:32.6 |
HIP 36912 |
20.52 |
| 2026-09-25 00:00 |
07:34:16.29 |
+26:27:01.7 |
HIP 36912 |
17.13 |
| 2026-09-25 12:00 |
07:34:32.40 |
+26:27:31.4 |
HIP 36912 |
13.90 |
| 2026-09-26 00:00 |
07:34:48.36 |
+26:28:01.5 |
HIP 36912 |
10.94 |
| 2026-09-26 12:00 |
07:35:04.18 |
+26:28:32.1 |
HIP 36912 |
8.50 |
| 2026-09-27 00:00 |
07:35:19.86 |
+26:29:03.2 |
HIP 36912 |
7.09 |
| 2026-09-27 12:00 |
07:35:35.40 |
+26:29:34.8 |
HIP 36912 |
7.29 |
| 2026-09-28 00:00 |
07:35:50.79 |
+26:30:07.0 |
HIP 36912 |
8.95 |
| 2026-09-28 12:00 |
07:36:06.03 |
+26:30:39.6 |
HIP 36912 |
11.43 |
| 2026-09-29 00:00 |
07:36:21.12 |
+26:31:12.8 |
HIP 36912 |
14.29 |
| 2026-09-29 12:00 |
07:36:36.07 |
+26:31:46.5 |
HIP 36912 |
17.31 |
| 2026-09-30 00:00 |
07:36:50.86 |
+26:32:20.8 |
HIP 36912 |
20.41 |
| 2026-09-30 12:00 |
07:37:05.50 |
+26:32:55.6 |
HIP 37195 |
23.36 |
| 2026-10-01 00:00 |
07:37:19.99 |
+26:33:31.0 |
HIP 37195 |
20.50 |
| 2026-10-01 12:00 |
07:37:34.32 |
+26:34:06.9 |
HIP 37195 |
17.80 |
| 2026-10-02 00:00 |
07:37:48.50 |
+26:34:43.3 |
HIP 37195 |
15.33 |
| 2026-10-02 12:00 |
07:38:02.52 |
+26:35:20.4 |
HIP 37195 |
13.21 |
| 2026-10-03 00:00 |
07:38:16.38 |
+26:35:58.0 |
HIP 37195 |
11.57 |
| 2026-10-03 12:00 |
07:38:30.09 |
+26:36:36.2 |
HIP 37195 |
10.64 |
| 2026-10-04 00:00 |
07:38:43.63 |
+26:37:15.0 |
HIP 37195 |
10.57 |
| 2026-10-04 12:00 |
07:38:57.01 |
+26:37:54.4 |
HIP 37195 |
11.34 |
| 2026-10-05 00:00 |
07:39:10.23 |
+26:38:34.3 |
HIP 37337 |
10.75 |
| 2026-10-05 12:00 |
07:39:23.28 |
+26:39:14.9 |
HIP 37337 |
7.87 |
| 2026-10-06 00:00 |
07:39:36.16 |
+26:39:56.1 |
HIP 37337 |
5.13 |
| 2026-10-06 12:00 |
07:39:48.88 |
+26:40:37.9 |
HIP 37337 |
2.87 |
| 2026-10-07 00:00 |
07:40:01.43 |
+26:41:20.4 |
HIP 37337 |
2.66 |
| 2026-10-07 12:00 |
07:40:13.80 |
+26:42:03.4 |
HIP 37337 |
4.72 |
| 2026-10-08 00:00 |
07:40:26.01 |
+26:42:47.1 |
HIP 37337 |
7.29 |
| 2026-10-08 12:00 |
07:40:38.04 |
+26:43:31.5 |
HIP 37337 |
9.96 |
| 2026-10-09 00:00 |
07:40:49.90 |
+26:44:16.4 |
HIP 37337 |
12.64 |
| 2026-10-09 12:00 |
07:41:01.58 |
+26:45:02.1 |
HIP 37337 |
15.31 |
| 2026-10-10 00:00 |
07:41:13.08 |
+26:45:48.4 |
HIP 37337 |
17.95 |
| 2026-10-10 12:00 |
07:41:24.41 |
+26:46:35.3 |
HIP 37337 |
20.57 |
| 2026-10-11 00:00 |
07:41:35.56 |
+26:47:23.0 |
HIP 37337 |
23.16 |