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) |
| 2026-06-01 00:00 |
06:00:32.66 |
+25:27:29.8 |
HIP 28548 |
14.17 |
| 2026-06-01 12:00 |
06:00:57.97 |
+25:27:58.6 |
HIP 28548 |
8.45 |
| 2026-06-02 00:00 |
06:01:23.32 |
+25:28:27.2 |
HIP 28548 |
2.76 |
| 2026-06-02 12:00 |
06:01:48.72 |
+25:28:55.6 |
HIP 28548 |
3.13 |
| 2026-06-03 00:00 |
06:02:14.17 |
+25:29:23.8 |
HIP 28548 |
8.85 |
| 2026-06-03 12:00 |
06:02:39.65 |
+25:29:51.7 |
HIP 28548 |
14.61 |
| 2026-06-04 00:00 |
06:03:05.18 |
+25:30:19.5 |
HIP 28742 |
15.54 |
| 2026-06-04 12:00 |
06:03:30.76 |
+25:30:47.0 |
HIP 28742 |
10.20 |
| 2026-06-05 00:00 |
06:03:56.37 |
+25:31:14.4 |
HIP 28742 |
5.80 |
| 2026-06-05 12:00 |
06:04:22.02 |
+25:31:41.5 |
HIP 28742 |
5.53 |
| 2026-06-06 00:00 |
06:04:47.72 |
+25:32:08.4 |
HIP 28742 |
9.74 |
| 2026-06-06 12:00 |
06:05:13.45 |
+25:32:35.1 |
HIP 28742 |
15.07 |
| 2026-06-07 00:00 |
06:05:39.23 |
+25:33:01.5 |
HIP 28742 |
20.68 |
| 2026-06-07 12:00 |
06:06:05.04 |
+25:33:27.8 |
HIP 28742 |
26.39 |
| 2026-06-08 00:00 |
06:06:30.89 |
+25:33:53.8 |
HIP 29075 |
21.00 |
| 2026-06-08 12:00 |
06:06:56.78 |
+25:34:19.6 |
HIP 29075 |
15.74 |
| 2026-06-09 00:00 |
06:07:22.70 |
+25:34:45.2 |
HIP 29075 |
11.08 |
| 2026-06-09 12:00 |
06:07:48.66 |
+25:35:10.6 |
HIP 29075 |
8.16 |
| 2026-06-10 00:00 |
06:08:14.66 |
+25:35:35.8 |
HIP 29075 |
8.91 |
| 2026-06-10 12:00 |
06:08:40.69 |
+25:36:00.7 |
HIP 29158 |
7.17 |
| 2026-06-11 00:00 |
06:09:06.75 |
+25:36:25.4 |
HIP 29158 |
5.75 |
| 2026-06-11 12:00 |
06:09:32.85 |
+25:36:49.9 |
HIP 29158 |
9.17 |
| 2026-06-12 00:00 |
06:09:58.98 |
+25:37:14.2 |
HIP 29158 |
14.32 |
| 2026-06-12 12:00 |
06:10:25.14 |
+25:37:38.3 |
HIP 29338 |
9.85 |
| 2026-06-13 00:00 |
06:10:51.33 |
+25:38:02.1 |
HIP 29338 |
4.91 |
| 2026-06-13 12:00 |
06:11:17.55 |
+25:38:25.8 |
HIP 29338 |
4.61 |
| 2026-06-14 00:00 |
06:11:43.80 |
+25:38:49.2 |
HIP 29338 |
9.42 |
| 2026-06-14 12:00 |
06:12:10.07 |
+25:39:12.4 |
HIP 29454 |
8.22 |
| 2026-06-15 00:00 |
06:12:36.38 |
+25:39:35.4 |
HIP 29454 |
8.79 |
| 2026-06-15 12:00 |
06:13:02.71 |
+25:39:58.2 |
HIP 29454 |
12.55 |
| 2026-06-16 00:00 |
06:13:29.07 |
+25:40:20.7 |
HIP 29454 |
17.57 |
| 2026-06-16 12:00 |
06:13:55.45 |
+25:40:43.0 |
HIP 29680 |
20.94 |
| 2026-06-17 00:00 |
06:14:21.85 |
+25:41:05.2 |
HIP 29680 |
16.92 |
| 2026-06-17 12:00 |
06:14:48.28 |
+25:41:27.1 |
HIP 29680 |
14.32 |
| 2026-06-18 00:00 |
06:15:14.73 |
+25:41:48.8 |
HIP 29680 |
13.97 |
| 2026-06-18 12:00 |
06:15:41.21 |
+25:42:10.2 |
HIP 29680 |
16.02 |
| 2026-06-19 00:00 |
06:16:07.70 |
+25:42:31.5 |
HIP 29833 |
16.68 |
| 2026-06-19 12:00 |
06:16:34.21 |
+25:42:52.6 |
HIP 29833 |
13.97 |
| 2026-06-20 00:00 |
06:17:00.74 |
+25:43:13.4 |
HIP 29833 |
13.55 |
| 2026-06-20 12:00 |
06:17:27.29 |
+25:43:34.1 |
HIP 29833 |
15.61 |
| 2026-06-21 00:00 |
06:17:53.86 |
+25:43:54.5 |
HIP 29967 |
12.72 |
| 2026-06-21 12:00 |
06:18:20.45 |
+25:44:14.7 |
HIP 29967 |
9.70 |
| 2026-06-22 00:00 |
06:18:47.05 |
+25:44:34.7 |
HIP 29967 |
9.92 |