메타데이터
| 항목 |
값 |
| Designation |
477P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2018-10-09T11:21:47.885760Z |
| Orbit solution date (soln_date, UTC) |
2024-04-13T16:43:16Z |
| Obs used |
320 |
| NEO |
- |
| M1 |
7.800 |
| K1 |
40.000 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2018-08-08T13:03:54.432000Z |
| Discovery magnitude (MPC) |
21.00 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2019-04-04.0000000 |
| e |
0.41596154 |
| q (au) |
1.756419 |
| a (au) |
3.007369 |
| i (deg) |
8.909359 |
| Ω (om, deg) |
59.208728 |
| ω (w, deg) |
305.889989 |
| M (ma, deg) |
33.360615 |
밝기
산란 + 전체 선형
$$
M_a = (15.556 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.556 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
11:21:37.58 |
+12:56:46.8 |
HIP 55428 |
24.70 |
| 2026-06-01 12:00 |
11:21:42.91 |
+12:54:58.7 |
HIP 55428 |
23.50 |
| 2026-06-02 00:00 |
11:21:48.44 |
+12:53:09.5 |
HIP 55428 |
22.46 |
| 2026-06-02 12:00 |
11:21:54.17 |
+12:51:19.3 |
HIP 55428 |
21.63 |
| 2026-06-03 00:00 |
11:22:00.11 |
+12:49:28.0 |
HIP 55428 |
21.03 |
| 2026-06-03 12:00 |
11:22:06.24 |
+12:47:35.7 |
HIP 55604 |
20.38 |
| 2026-06-04 00:00 |
11:22:12.58 |
+12:45:42.4 |
HIP 55604 |
19.20 |
| 2026-06-04 12:00 |
11:22:19.11 |
+12:43:48.1 |
HIP 55604 |
18.23 |
| 2026-06-05 00:00 |
11:22:25.83 |
+12:41:52.7 |
HIP 55604 |
17.53 |
| 2026-06-05 12:00 |
11:22:32.76 |
+12:39:56.4 |
HIP 55604 |
17.14 |
| 2026-06-06 00:00 |
11:22:39.87 |
+12:37:59.0 |
HIP 55604 |
17.11 |
| 2026-06-06 12:00 |
11:22:47.18 |
+12:36:00.7 |
HIP 55604 |
17.46 |
| 2026-06-07 00:00 |
11:22:54.69 |
+12:34:01.4 |
HIP 55604 |
18.19 |
| 2026-06-07 12:00 |
11:23:02.38 |
+12:32:01.1 |
HIP 55654 |
17.04 |
| 2026-06-08 00:00 |
11:23:10.27 |
+12:29:59.9 |
HIP 55654 |
14.74 |
| 2026-06-08 12:00 |
11:23:18.34 |
+12:27:57.7 |
HIP 55654 |
12.59 |
| 2026-06-09 00:00 |
11:23:26.60 |
+12:25:54.5 |
HIP 55654 |
10.72 |
| 2026-06-09 12:00 |
11:23:35.06 |
+12:23:50.4 |
HIP 55654 |
9.34 |
| 2026-06-10 00:00 |
11:23:43.69 |
+12:21:45.4 |
HIP 55654 |
8.73 |
| 2026-06-10 12:00 |
11:23:52.52 |
+12:19:39.4 |
HIP 55654 |
9.09 |
| 2026-06-11 00:00 |
11:24:01.52 |
+12:17:32.5 |
HIP 55654 |
10.35 |
| 2026-06-11 12:00 |
11:24:10.72 |
+12:15:24.7 |
HIP 55654 |
12.28 |
| 2026-06-12 00:00 |
11:24:20.09 |
+12:13:16.0 |
HIP 55654 |
14.64 |
| 2026-06-12 12:00 |
11:24:29.65 |
+12:11:06.4 |
HIP 55654 |
17.27 |
| 2026-06-13 00:00 |
11:24:39.38 |
+12:08:55.9 |
HIP 55799 |
20.05 |
| 2026-06-13 12:00 |
11:24:49.30 |
+12:06:44.5 |
HIP 55799 |
18.36 |
| 2026-06-14 00:00 |
11:24:59.40 |
+12:04:32.3 |
HIP 55799 |
17.11 |
| 2026-06-14 12:00 |
11:25:09.67 |
+12:02:19.1 |
HIP 55799 |
16.41 |
| 2026-06-15 00:00 |
11:25:20.12 |
+12:00:05.1 |
HIP 55799 |
16.37 |
| 2026-06-15 12:00 |
11:25:30.75 |
+11:57:50.3 |
HIP 55799 |
17.02 |
| 2026-06-16 00:00 |
11:25:41.55 |
+11:55:34.6 |
HIP 55799 |
18.30 |
| 2026-06-16 12:00 |
11:25:52.52 |
+11:53:18.0 |
HIP 55799 |
20.11 |
| 2026-06-17 00:00 |
11:26:03.66 |
+11:51:00.6 |
HIP 55837 |
17.84 |
| 2026-06-17 12:00 |
11:26:14.98 |
+11:48:42.5 |
HIP 55837 |
14.51 |
| 2026-06-18 00:00 |
11:26:26.46 |
+11:46:23.4 |
HIP 55837 |
11.32 |
| 2026-06-18 12:00 |
11:26:38.12 |
+11:44:03.6 |
HIP 55837 |
8.49 |
| 2026-06-19 00:00 |
11:26:49.94 |
+11:41:43.0 |
HIP 55837 |
6.57 |
| 2026-06-19 12:00 |
11:27:01.92 |
+11:39:21.6 |
HIP 55837 |
6.50 |
| 2026-06-20 00:00 |
11:27:14.08 |
+11:36:59.4 |
HIP 55837 |
8.39 |
| 2026-06-20 12:00 |
11:27:26.39 |
+11:34:36.5 |
HIP 55837 |
11.33 |
| 2026-06-21 00:00 |
11:27:38.87 |
+11:32:12.7 |
HIP 55837 |
14.73 |
| 2026-06-21 12:00 |
11:27:51.50 |
+11:29:48.3 |
HIP 55837 |
18.37 |
| 2026-06-22 00:00 |
11:28:04.30 |
+11:27:23.0 |
HIP 55837 |
22.15 |