메타데이터
| 항목 |
값 |
| Designation |
470P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2023-12-19T19:12:04.207680Z |
| Orbit solution date (soln_date, UTC) |
2025-02-13T09:13:19Z |
| Obs used |
210 |
| NEO |
- |
| M1 |
13.700 |
| K1 |
11.250 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2023-07-30T12:57:55.440000Z |
| Discovery magnitude (MPC) |
20.84 i |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2021-03-20.0000000 |
| e |
0.38862305 |
| q (au) |
2.727781 |
| a (au) |
4.461701 |
| i (deg) |
8.837963 |
| Ω (om, deg) |
246.243776 |
| ω (w, deg) |
152.250537 |
| M (ma, deg) |
254.916863 |
밝기
산란 + 전체 선형
$$
M_a = (11.605 + 5.535\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.605 |
| n |
5.535 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
1.000 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
10:37:24.88 |
-02:49:58.1 |
HIP 52176 |
43.59 |
| 2026-03-26 12:00 |
10:37:11.61 |
-02:47:58.8 |
HIP 52176 |
44.88 |
| 2026-03-27 00:00 |
10:36:58.48 |
-02:45:59.7 |
HIP 51872 |
45.90 |
| 2026-03-27 12:00 |
10:36:45.49 |
-02:44:00.8 |
HIP 51872 |
42.95 |
| 2026-03-28 00:00 |
10:36:32.64 |
-02:42:02.3 |
HIP 51872 |
40.15 |
| 2026-03-28 12:00 |
10:36:19.93 |
-02:40:04.0 |
HIP 51872 |
37.53 |
| 2026-03-29 00:00 |
10:36:07.37 |
-02:38:06.0 |
HIP 51872 |
35.13 |
| 2026-03-29 12:00 |
10:35:54.95 |
-02:36:08.4 |
HIP 51872 |
32.97 |
| 2026-03-30 00:00 |
10:35:42.68 |
-02:34:11.0 |
HIP 51872 |
31.10 |
| 2026-03-30 12:00 |
10:35:30.56 |
-02:32:14.1 |
HIP 51872 |
29.56 |
| 2026-03-31 00:00 |
10:35:18.59 |
-02:30:17.5 |
HIP 51872 |
28.39 |
| 2026-03-31 12:00 |
10:35:06.78 |
-02:28:21.3 |
HIP 51872 |
27.62 |
| 2026-04-01 00:00 |
10:34:55.12 |
-02:26:25.5 |
HIP 51872 |
27.28 |
| 2026-04-01 12:00 |
10:34:43.61 |
-02:24:30.1 |
HIP 51872 |
27.36 |
| 2026-04-02 00:00 |
10:34:32.26 |
-02:22:35.1 |
HIP 51872 |
27.85 |
| 2026-04-02 12:00 |
10:34:21.07 |
-02:20:40.6 |
HIP 51872 |
28.72 |
| 2026-04-03 00:00 |
10:34:10.03 |
-02:18:46.6 |
HIP 51872 |
29.92 |
| 2026-04-03 12:00 |
10:33:59.16 |
-02:16:53.1 |
HIP 51872 |
31.40 |
| 2026-04-04 00:00 |
10:33:48.45 |
-02:15:00.0 |
HIP 51584 |
31.01 |
| 2026-04-04 12:00 |
10:33:37.90 |
-02:13:07.5 |
HIP 51584 |
27.78 |
| 2026-04-05 00:00 |
10:33:27.52 |
-02:11:15.5 |
HIP 51584 |
24.60 |
| 2026-04-05 12:00 |
10:33:17.30 |
-02:09:24.0 |
HIP 51584 |
21.45 |
| 2026-04-06 00:00 |
10:33:07.25 |
-02:07:33.1 |
HIP 51584 |
18.34 |
| 2026-04-06 12:00 |
10:32:57.37 |
-02:05:42.8 |
HIP 51584 |
15.27 |
| 2026-04-07 00:00 |
10:32:47.66 |
-02:03:53.0 |
HIP 51584 |
12.24 |
| 2026-04-07 12:00 |
10:32:38.12 |
-02:02:03.9 |
HIP 51584 |
9.26 |
| 2026-04-08 00:00 |
10:32:28.75 |
-02:00:15.4 |
HIP 51584 |
6.33 |
| 2026-04-08 12:00 |
10:32:19.55 |
-01:58:27.5 |
HIP 51584 |
3.49 |
| 2026-04-09 00:00 |
10:32:10.52 |
-01:56:40.2 |
HIP 51584 |
1.13 |
| 2026-04-09 12:00 |
10:32:01.67 |
-01:54:53.6 |
HIP 51584 |
2.59 |
| 2026-04-10 00:00 |
10:31:53.00 |
-01:53:07.7 |
HIP 51584 |
5.27 |
| 2026-04-10 12:00 |
10:31:44.50 |
-01:51:22.4 |
HIP 51584 |
7.99 |
| 2026-04-11 00:00 |
10:31:36.18 |
-01:49:37.9 |
HIP 51584 |
10.68 |
| 2026-04-11 12:00 |
10:31:28.04 |
-01:47:54.1 |
HIP 51584 |
13.33 |
| 2026-04-12 00:00 |
10:31:20.08 |
-01:46:11.0 |
HIP 51584 |
15.95 |
| 2026-04-12 12:00 |
10:31:12.29 |
-01:44:28.6 |
HIP 51584 |
18.53 |
| 2026-04-13 00:00 |
10:31:04.69 |
-01:42:47.0 |
HIP 51584 |
21.07 |
| 2026-04-13 12:00 |
10:30:57.27 |
-01:41:06.1 |
HIP 51584 |
23.56 |
| 2026-04-14 00:00 |
10:30:50.04 |
-01:39:26.1 |
HIP 51584 |
26.01 |
| 2026-04-14 12:00 |
10:30:42.98 |
-01:37:46.8 |
HIP 51584 |
28.42 |
| 2026-04-15 00:00 |
10:30:36.11 |
-01:36:08.3 |
HIP 51584 |
30.79 |
| 2026-04-15 12:00 |
10:30:29.43 |
-01:34:30.6 |
HIP 51343 |
31.68 |
| 2026-04-16 00:00 |
10:30:22.93 |
-01:32:53.8 |
HIP 51343 |
32.08 |