메타데이터
| 항목 |
값 |
| Designation |
C/2016 M1 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2018-08-10T04:14:19.821120Z |
| Orbit solution date (soln_date, UTC) |
2022-03-09T09:02:19Z |
| Obs used |
3553 |
| NEO |
- |
| M1 |
8.400 |
| K1 |
6.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2018-01-25.0000000 |
| e |
0.99907148 |
| q (au) |
2.210500 |
| a (au) |
2380.662751 |
| i (deg) |
90.993781 |
| Ω (om, deg) |
92.204019 |
| ω (w, deg) |
209.825799 |
| M (ma, deg) |
359.998327 |
밝기
산란 + 전체 선형
$$
M_a = (6.650 + 3.587\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
6.650 |
| n |
3.587 |
| gf |
1.000 |
| gb |
-0.868 |
| k |
0.997 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2016-04-11 |
2017-08-24 |
-0.4988 |
+0.462 |
| 2017-08-24 |
2018-08-10 |
+3.5426 |
-2.264 |
| 2018-08-10 |
2022-03-01 |
+3.6685 |
-3.220 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
05:57:58.64 |
+14:20:06.6 |
HIP 28314 |
14.35 |
| 2026-03-26 12:00 |
05:57:59.24 |
+14:20:30.2 |
HIP 28314 |
14.18 |
| 2026-03-27 00:00 |
05:57:59.89 |
+14:20:53.8 |
HIP 28314 |
14.01 |
| 2026-03-27 12:00 |
05:58:00.59 |
+14:21:17.3 |
HIP 28314 |
13.84 |
| 2026-03-28 00:00 |
05:58:01.35 |
+14:21:40.8 |
HIP 28314 |
13.67 |
| 2026-03-28 12:00 |
05:58:02.15 |
+14:22:04.2 |
HIP 28314 |
13.50 |
| 2026-03-29 00:00 |
05:58:03.01 |
+14:22:27.6 |
HIP 28314 |
13.32 |
| 2026-03-29 12:00 |
05:58:03.92 |
+14:22:50.9 |
HIP 28314 |
13.15 |
| 2026-03-30 00:00 |
05:58:04.88 |
+14:23:14.3 |
HIP 28314 |
12.98 |
| 2026-03-30 12:00 |
05:58:05.89 |
+14:23:37.5 |
HIP 28314 |
12.81 |
| 2026-03-31 00:00 |
05:58:06.95 |
+14:24:00.8 |
HIP 28314 |
12.64 |
| 2026-03-31 12:00 |
05:58:08.06 |
+14:24:23.9 |
HIP 28314 |
12.47 |
| 2026-04-01 00:00 |
05:58:09.22 |
+14:24:47.1 |
HIP 28314 |
12.31 |
| 2026-04-01 12:00 |
05:58:10.43 |
+14:25:10.2 |
HIP 28314 |
12.15 |
| 2026-04-02 00:00 |
05:58:11.69 |
+14:25:33.2 |
HIP 28314 |
12.00 |
| 2026-04-02 12:00 |
05:58:13.00 |
+14:25:56.2 |
HIP 28314 |
11.86 |
| 2026-04-03 00:00 |
05:58:14.36 |
+14:26:19.1 |
HIP 28314 |
11.72 |
| 2026-04-03 12:00 |
05:58:15.77 |
+14:26:42.0 |
HIP 28314 |
11.59 |
| 2026-04-04 00:00 |
05:58:17.23 |
+14:27:04.9 |
HIP 28314 |
11.48 |
| 2026-04-04 12:00 |
05:58:18.74 |
+14:27:27.7 |
HIP 28314 |
11.38 |
| 2026-04-05 00:00 |
05:58:20.30 |
+14:27:50.4 |
HIP 28314 |
11.29 |
| 2026-04-05 12:00 |
05:58:21.90 |
+14:28:13.1 |
HIP 28314 |
11.21 |
| 2026-04-06 00:00 |
05:58:23.56 |
+14:28:35.7 |
HIP 28314 |
11.15 |
| 2026-04-06 12:00 |
05:58:25.26 |
+14:28:58.3 |
HIP 28314 |
11.11 |
| 2026-04-07 00:00 |
05:58:27.01 |
+14:29:20.8 |
HIP 28314 |
11.09 |
| 2026-04-07 12:00 |
05:58:28.81 |
+14:29:43.3 |
HIP 28314 |
11.09 |
| 2026-04-08 00:00 |
05:58:30.66 |
+14:30:05.7 |
HIP 28314 |
11.12 |
| 2026-04-08 12:00 |
05:58:32.55 |
+14:30:28.0 |
HIP 28314 |
11.16 |
| 2026-04-09 00:00 |
05:58:34.49 |
+14:30:50.3 |
HIP 28314 |
11.23 |
| 2026-04-09 12:00 |
05:58:36.48 |
+14:31:12.6 |
HIP 28314 |
11.33 |
| 2026-04-10 00:00 |
05:58:38.52 |
+14:31:34.7 |
HIP 28314 |
11.45 |
| 2026-04-10 12:00 |
05:58:40.60 |
+14:31:56.8 |
HIP 28314 |
11.60 |
| 2026-04-11 00:00 |
05:58:42.73 |
+14:32:18.9 |
HIP 28314 |
11.77 |
| 2026-04-11 12:00 |
05:58:44.90 |
+14:32:40.8 |
HIP 28314 |
11.97 |
| 2026-04-12 00:00 |
05:58:47.12 |
+14:33:02.8 |
HIP 28314 |
12.20 |
| 2026-04-12 12:00 |
05:58:49.39 |
+14:33:24.6 |
HIP 28314 |
12.46 |
| 2026-04-13 00:00 |
05:58:51.70 |
+14:33:46.4 |
HIP 28314 |
12.74 |
| 2026-04-13 12:00 |
05:58:54.06 |
+14:34:08.1 |
HIP 28314 |
13.05 |
| 2026-04-14 00:00 |
05:58:56.46 |
+14:34:29.8 |
HIP 28314 |
13.38 |
| 2026-04-14 12:00 |
05:58:58.91 |
+14:34:51.3 |
HIP 28314 |
13.74 |
| 2026-04-15 00:00 |
05:59:01.41 |
+14:35:12.8 |
HIP 28314 |
14.12 |
| 2026-04-15 12:00 |
05:59:03.94 |
+14:35:34.3 |
HIP 28314 |
14.53 |
| 2026-04-16 00:00 |
05:59:06.53 |
+14:35:55.6 |
HIP 28314 |
14.96 |