메타데이터
| 항목 |
값 |
| Designation |
448P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2022-09-08T00:31:25.878720Z |
| Orbit solution date (soln_date, UTC) |
2024-08-11T00:12:25Z |
| Obs used |
184 |
| NEO |
- |
| M1 |
18.000 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2008-10-01T09:02:51.072000Z |
| Discovery magnitude (MPC) |
20.00 V |
| Discovery observatory (MPC) |
703 · University of Arizona Catalina Sky Survey |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2019-04-24.0000000 |
| e |
0.41897178 |
| q (au) |
2.109134 |
| a (au) |
3.630003 |
| i (deg) |
12.152893 |
| Ω (om, deg) |
161.780755 |
| ω (w, deg) |
219.028807 |
| M (ma, deg) |
184.282775 |
밝기
산란 + 전체 선형
$$
M_a = (19.465 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
19.465 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.629 |
| k |
0.800 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
13:22:47.71 |
+00:44:56.1 |
HIP 65483 |
37.61 |
| 2026-07-29 12:00 |
13:22:59.67 |
+00:43:12.1 |
HIP 65483 |
35.01 |
| 2026-07-30 00:00 |
13:23:11.76 |
+00:41:27.5 |
HIP 65483 |
32.54 |
| 2026-07-30 12:00 |
13:23:23.99 |
+00:39:42.2 |
HIP 65483 |
30.24 |
| 2026-07-31 00:00 |
13:23:36.34 |
+00:37:56.4 |
HIP 65483 |
28.17 |
| 2026-07-31 12:00 |
13:23:48.84 |
+00:36:10.0 |
HIP 65483 |
26.40 |
| 2026-08-01 00:00 |
13:24:01.46 |
+00:34:23.1 |
HIP 65483 |
25.00 |
| 2026-08-01 12:00 |
13:24:14.21 |
+00:32:35.5 |
HIP 65483 |
24.06 |
| 2026-08-02 00:00 |
13:24:27.09 |
+00:30:47.4 |
HIP 65483 |
23.64 |
| 2026-08-02 12:00 |
13:24:40.10 |
+00:28:58.8 |
HIP 65483 |
23.79 |
| 2026-08-03 00:00 |
13:24:53.23 |
+00:27:09.6 |
HIP 65483 |
24.52 |
| 2026-08-03 12:00 |
13:25:06.50 |
+00:25:19.8 |
HIP 65483 |
25.78 |
| 2026-08-04 00:00 |
13:25:19.89 |
+00:23:29.5 |
HIP 65483 |
27.52 |
| 2026-08-04 12:00 |
13:25:33.41 |
+00:21:38.7 |
HIP 65483 |
29.66 |
| 2026-08-05 00:00 |
13:25:47.05 |
+00:19:47.4 |
HIP 65483 |
32.14 |
| 2026-08-05 12:00 |
13:26:00.82 |
+00:17:55.5 |
HIP 65483 |
34.90 |
| 2026-08-06 00:00 |
13:26:14.72 |
+00:16:03.1 |
HIP 65483 |
37.88 |
| 2026-08-06 12:00 |
13:26:28.73 |
+00:14:10.2 |
HIP 65683 |
40.67 |
| 2026-08-07 00:00 |
13:26:42.87 |
+00:12:16.8 |
HIP 65683 |
37.12 |
| 2026-08-07 12:00 |
13:26:57.14 |
+00:10:22.9 |
HIP 65683 |
33.66 |
| 2026-08-08 00:00 |
13:27:11.52 |
+00:08:28.6 |
HIP 65789 |
30.31 |
| 2026-08-08 12:00 |
13:27:26.03 |
+00:06:33.7 |
HIP 65789 |
26.66 |
| 2026-08-09 00:00 |
13:27:40.65 |
+00:04:38.3 |
HIP 65789 |
23.13 |
| 2026-08-09 12:00 |
13:27:55.40 |
+00:02:42.5 |
HIP 65789 |
19.81 |
| 2026-08-10 00:00 |
13:28:10.27 |
+00:00:46.2 |
HIP 65789 |
16.85 |
| 2026-08-10 12:00 |
13:28:25.25 |
-00:01:10.5 |
HIP 65789 |
14.48 |
| 2026-08-11 00:00 |
13:28:40.36 |
-00:03:07.7 |
HIP 65789 |
13.07 |
| 2026-08-11 12:00 |
13:28:55.58 |
-00:05:05.4 |
HIP 65789 |
12.96 |
| 2026-08-12 00:00 |
13:29:10.92 |
-00:07:03.4 |
HIP 65789 |
14.22 |
| 2026-08-12 12:00 |
13:29:26.37 |
-00:09:02.0 |
HIP 65789 |
16.54 |
| 2026-08-13 00:00 |
13:29:41.94 |
-00:11:00.9 |
HIP 65789 |
19.59 |
| 2026-08-13 12:00 |
13:29:57.62 |
-00:13:00.2 |
HIP 65789 |
23.08 |
| 2026-08-14 00:00 |
13:30:13.42 |
-00:15:00.0 |
HIP 65789 |
26.86 |
| 2026-08-14 12:00 |
13:30:29.33 |
-00:17:00.2 |
HIP 65789 |
30.84 |
| 2026-08-15 00:00 |
13:30:45.35 |
-00:19:00.7 |
HIP 65789 |
34.96 |
| 2026-08-15 12:00 |
13:31:01.48 |
-00:21:01.7 |
HIP 65789 |
39.17 |
| 2026-08-16 00:00 |
13:31:17.73 |
-00:23:03.0 |
HIP 65789 |
43.48 |
| 2026-08-16 12:00 |
13:31:34.08 |
-00:25:04.7 |
HIP 66212 |
41.05 |
| 2026-08-17 00:00 |
13:31:50.54 |
-00:27:06.8 |
HIP 66212 |
37.39 |
| 2026-08-17 12:00 |
13:32:07.11 |
-00:29:09.2 |
HIP 66212 |
33.92 |
| 2026-08-18 00:00 |
13:32:23.79 |
-00:31:12.0 |
HIP 66212 |
30.74 |
| 2026-08-18 12:00 |
13:32:40.57 |
-00:33:15.2 |
HIP 66212 |
27.96 |
| 2026-08-19 00:00 |
13:32:57.46 |
-00:35:18.6 |
HIP 66212 |
25.71 |