메타데이터
| 항목 |
값 |
| Designation |
C/2017 M3 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2017-04-28T06:37:59.880000Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:33:35Z |
| Obs used |
65 |
| NEO |
- |
| M1 |
7.300 |
| K1 |
15.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2017-10-29.0000000 |
| e |
0.97323499 |
| q (au) |
4.656283 |
| a (au) |
173.969005 |
| i (deg) |
77.506843 |
| Ω (om, deg) |
6.997266 |
| ω (w, deg) |
110.325474 |
| M (ma, deg) |
0.078915 |
밝기
산란 + 전체 선형
$$
M_a = (6.736 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
6.736 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.501 |
| 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) |
| 2026-05-12 00:00 |
11:05:08.11 |
-56:32:43.9 |
HIP 54187 |
8.57 |
| 2026-05-12 12:00 |
11:05:03.47 |
-56:31:37.9 |
HIP 54187 |
7.46 |
| 2026-05-13 00:00 |
11:04:58.92 |
-56:30:31.8 |
HIP 54187 |
6.40 |
| 2026-05-13 12:00 |
11:04:54.45 |
-56:29:25.6 |
HIP 54187 |
5.44 |
| 2026-05-14 00:00 |
11:04:50.06 |
-56:28:19.2 |
HIP 54187 |
4.62 |
| 2026-05-14 12:00 |
11:04:45.76 |
-56:27:12.7 |
HIP 54187 |
4.02 |
| 2026-05-15 00:00 |
11:04:41.54 |
-56:26:06.2 |
HIP 54187 |
3.75 |
| 2026-05-15 12:00 |
11:04:37.41 |
-56:24:59.5 |
HIP 54187 |
3.88 |
| 2026-05-16 00:00 |
11:04:33.36 |
-56:23:52.8 |
HIP 54187 |
4.36 |
| 2026-05-16 12:00 |
11:04:29.40 |
-56:22:46.0 |
HIP 54187 |
5.10 |
| 2026-05-17 00:00 |
11:04:25.52 |
-56:21:39.1 |
HIP 54187 |
6.00 |
| 2026-05-17 12:00 |
11:04:21.73 |
-56:20:32.1 |
HIP 54187 |
6.99 |
| 2026-05-18 00:00 |
11:04:18.02 |
-56:19:25.1 |
HIP 54187 |
8.04 |
| 2026-05-18 12:00 |
11:04:14.39 |
-56:18:18.1 |
HIP 54187 |
9.13 |
| 2026-05-19 00:00 |
11:04:10.86 |
-56:17:11.0 |
HIP 54187 |
10.24 |
| 2026-05-19 12:00 |
11:04:07.40 |
-56:16:03.8 |
HIP 54187 |
11.36 |
| 2026-05-20 00:00 |
11:04:04.03 |
-56:14:56.6 |
HIP 54187 |
12.50 |
| 2026-05-20 12:00 |
11:04:00.75 |
-56:13:49.5 |
HIP 54187 |
13.64 |
| 2026-05-21 00:00 |
11:03:57.55 |
-56:12:42.2 |
HIP 54187 |
14.79 |
| 2026-05-21 12:00 |
11:03:54.44 |
-56:11:35.0 |
HIP 54187 |
15.93 |
| 2026-05-22 00:00 |
11:03:51.41 |
-56:10:27.8 |
HIP 54187 |
17.08 |
| 2026-05-22 12:00 |
11:03:48.47 |
-56:09:20.6 |
HIP 54187 |
18.23 |
| 2026-05-23 00:00 |
11:03:45.61 |
-56:08:13.4 |
HIP 54187 |
19.38 |
| 2026-05-23 12:00 |
11:03:42.84 |
-56:07:06.2 |
HIP 54187 |
20.52 |
| 2026-05-24 00:00 |
11:03:40.15 |
-56:05:59.0 |
HIP 54118 |
20.35 |
| 2026-05-24 12:00 |
11:03:37.55 |
-56:04:51.9 |
HIP 54118 |
19.41 |
| 2026-05-25 00:00 |
11:03:35.03 |
-56:03:44.8 |
HIP 54118 |
18.49 |
| 2026-05-25 12:00 |
11:03:32.59 |
-56:02:37.8 |
HIP 54118 |
17.60 |
| 2026-05-26 00:00 |
11:03:30.24 |
-56:01:30.7 |
HIP 54118 |
16.73 |
| 2026-05-26 12:00 |
11:03:27.97 |
-56:00:23.8 |
HIP 54118 |
15.90 |
| 2026-05-27 00:00 |
11:03:25.79 |
-55:59:16.9 |
HIP 54118 |
15.11 |
| 2026-05-27 12:00 |
11:03:23.69 |
-55:58:10.1 |
HIP 54118 |
14.36 |
| 2026-05-28 00:00 |
11:03:21.67 |
-55:57:03.3 |
HIP 54118 |
13.66 |
| 2026-05-28 12:00 |
11:03:19.74 |
-55:55:56.6 |
HIP 54118 |
13.02 |
| 2026-05-29 00:00 |
11:03:17.89 |
-55:54:50.0 |
HIP 54118 |
12.44 |
| 2026-05-29 12:00 |
11:03:16.13 |
-55:53:43.5 |
HIP 54118 |
11.94 |
| 2026-05-30 00:00 |
11:03:14.45 |
-55:52:37.1 |
HIP 54118 |
11.51 |
| 2026-05-30 12:00 |
11:03:12.85 |
-55:51:30.8 |
HIP 54118 |
11.18 |
| 2026-05-31 00:00 |
11:03:11.33 |
-55:50:24.6 |
HIP 54118 |
10.94 |
| 2026-05-31 12:00 |
11:03:09.90 |
-55:49:18.5 |
HIP 54118 |
10.80 |
| 2026-06-01 00:00 |
11:03:08.55 |
-55:48:12.5 |
HIP 54118 |
10.77 |
| 2026-06-01 12:00 |
11:03:07.28 |
-55:47:06.6 |
HIP 54118 |
10.84 |
| 2026-06-02 00:00 |
11:03:06.09 |
-55:46:00.9 |
HIP 54118 |
11.01 |