메타데이터
| 항목 |
값 |
| Designation |
455P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2017-07-23T16:02:18.502080Z |
| Orbit solution date (soln_date, UTC) |
2023-02-09T05:35:52Z |
| Obs used |
71 |
| NEO |
- |
| M1 |
9.400 |
| K1 |
31.250 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2011-08-21T13:23:27.830400Z |
| Discovery magnitude (MPC) |
23.18 G |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2017-04-11.0000000 |
| e |
0.30420723 |
| q (au) |
2.195173 |
| a (au) |
3.154924 |
| i (deg) |
14.138047 |
| Ω (om, deg) |
146.211575 |
| ω (w, deg) |
237.939928 |
| M (ma, deg) |
341.766645 |
밝기
산란 + 전체 선형
$$
M_a = (20.000 + 3.420\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
20.000 |
| n |
3.420 |
| gf |
0.923 |
| gb |
-0.830 |
| k |
0.981 |
| δ90 |
4.926 |
| 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) |
| 2026-03-26 00:00 |
14:57:40.15 |
+00:14:21.4 |
HIP 73153 |
16.48 |
| 2026-03-26 12:00 |
14:57:29.07 |
+00:17:04.5 |
HIP 73153 |
12.68 |
| 2026-03-27 00:00 |
14:57:17.77 |
+00:19:47.8 |
HIP 73153 |
8.92 |
| 2026-03-27 12:00 |
14:57:06.24 |
+00:22:31.3 |
HIP 73153 |
5.38 |
| 2026-03-28 00:00 |
14:56:54.49 |
+00:25:15.1 |
HIP 73153 |
3.15 |
| 2026-03-28 12:00 |
14:56:42.52 |
+00:27:59.0 |
HIP 73153 |
4.86 |
| 2026-03-29 00:00 |
14:56:30.32 |
+00:30:43.2 |
HIP 73153 |
8.43 |
| 2026-03-29 12:00 |
14:56:17.91 |
+00:33:27.5 |
HIP 73153 |
12.38 |
| 2026-03-30 00:00 |
14:56:05.28 |
+00:36:11.9 |
HIP 73033 |
11.13 |
| 2026-03-30 12:00 |
14:55:52.44 |
+00:38:56.5 |
HIP 73033 |
6.92 |
| 2026-03-31 00:00 |
14:55:39.39 |
+00:41:41.1 |
HIP 73033 |
2.71 |
| 2026-03-31 12:00 |
14:55:26.12 |
+00:44:25.8 |
HIP 73033 |
1.83 |
| 2026-04-01 00:00 |
14:55:12.65 |
+00:47:10.5 |
HIP 73033 |
6.07 |
| 2026-04-01 12:00 |
14:54:58.97 |
+00:49:55.2 |
HIP 73033 |
10.45 |
| 2026-04-02 00:00 |
14:54:45.08 |
+00:52:39.9 |
HIP 72978 |
14.29 |
| 2026-04-02 12:00 |
14:54:30.99 |
+00:55:24.6 |
HIP 72978 |
12.51 |
| 2026-04-03 00:00 |
14:54:16.71 |
+00:58:09.2 |
HIP 72978 |
12.24 |
| 2026-04-03 12:00 |
14:54:02.22 |
+01:00:53.7 |
HIP 72978 |
13.59 |
| 2026-04-04 00:00 |
14:53:47.54 |
+01:03:38.1 |
HIP 72978 |
16.20 |
| 2026-04-04 12:00 |
14:53:32.66 |
+01:06:22.4 |
HIP 72978 |
19.60 |
| 2026-04-05 00:00 |
14:53:17.59 |
+01:09:06.5 |
HIP 72978 |
23.47 |
| 2026-04-05 12:00 |
14:53:02.33 |
+01:11:50.5 |
HIP 72978 |
27.63 |
| 2026-04-06 00:00 |
14:52:46.89 |
+01:14:34.2 |
HIP 72978 |
31.98 |
| 2026-04-06 12:00 |
14:52:31.25 |
+01:17:17.6 |
HIP 72884 |
34.78 |
| 2026-04-07 00:00 |
14:52:15.44 |
+01:20:00.8 |
HIP 72884 |
34.98 |
| 2026-04-07 12:00 |
14:51:59.45 |
+01:22:43.7 |
HIP 72884 |
35.85 |
| 2026-04-08 00:00 |
14:51:43.28 |
+01:25:26.3 |
HIP 72521 |
31.57 |
| 2026-04-08 12:00 |
14:51:26.94 |
+01:28:08.6 |
HIP 72521 |
27.20 |
| 2026-04-09 00:00 |
14:51:10.42 |
+01:30:50.4 |
HIP 72521 |
23.00 |
| 2026-04-09 12:00 |
14:50:53.74 |
+01:33:31.9 |
HIP 72521 |
19.10 |
| 2026-04-10 00:00 |
14:50:36.89 |
+01:36:12.9 |
HIP 72521 |
15.77 |
| 2026-04-10 12:00 |
14:50:19.88 |
+01:38:53.5 |
HIP 72521 |
13.48 |
| 2026-04-11 00:00 |
14:50:02.70 |
+01:41:33.6 |
HIP 72521 |
12.82 |
| 2026-04-11 12:00 |
14:49:45.37 |
+01:44:13.1 |
HIP 72521 |
14.06 |
| 2026-04-12 00:00 |
14:49:27.89 |
+01:46:52.2 |
HIP 72521 |
16.81 |
| 2026-04-12 12:00 |
14:49:10.25 |
+01:49:30.6 |
HIP 72546 |
17.39 |
| 2026-04-13 00:00 |
14:48:52.47 |
+01:52:08.5 |
HIP 72361 |
16.59 |
| 2026-04-13 12:00 |
14:48:34.54 |
+01:54:45.7 |
HIP 72361 |
12.92 |
| 2026-04-14 00:00 |
14:48:16.47 |
+01:57:22.3 |
HIP 72361 |
10.57 |
| 2026-04-14 12:00 |
14:47:58.26 |
+01:59:58.1 |
HIP 72330 |
8.44 |
| 2026-04-15 00:00 |
14:47:39.92 |
+02:02:33.3 |
HIP 72330 |
3.59 |
| 2026-04-15 12:00 |
14:47:21.44 |
+02:05:07.7 |
HIP 72330 |
3.16 |
| 2026-04-16 00:00 |
14:47:02.84 |
+02:07:41.4 |
HIP 72330 |
7.95 |