메타데이터
| 항목 |
값 |
| Designation |
C/2015 K1 (MASTER) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-10-13T13:49:54.566400Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:33:10Z |
| Obs used |
584 |
| NEO |
- |
| M1 |
11.100 |
| K1 |
5.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-08-30.0000000 |
| e |
0.98583674 |
| q (au) |
2.557494 |
| a (au) |
180.572455 |
| i (deg) |
29.381729 |
| Ω (om, deg) |
5.177060 |
| ω (w, deg) |
280.196200 |
| M (ma, deg) |
0.130152 |
밝기
산란 + 전체 선형
$$
M_a = (9.364 + 3.427\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.364 |
| n |
3.427 |
| gf |
0.946 |
| gb |
-0.917 |
| k |
0.999 |
| δ90 |
1.000 |
| 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 |
03:53:00.70 |
+46:16:56.7 |
HIP 18219 |
12.61 |
| 2026-05-12 12:00 |
03:53:07.28 |
+46:17:06.7 |
HIP 18219 |
11.83 |
| 2026-05-13 00:00 |
03:53:13.86 |
+46:17:17.0 |
HIP 18219 |
11.10 |
| 2026-05-13 12:00 |
03:53:20.44 |
+46:17:27.5 |
HIP 18219 |
10.44 |
| 2026-05-14 00:00 |
03:53:27.04 |
+46:17:38.2 |
HIP 18219 |
9.87 |
| 2026-05-14 12:00 |
03:53:33.64 |
+46:17:49.1 |
HIP 18219 |
9.41 |
| 2026-05-15 00:00 |
03:53:40.24 |
+46:18:00.3 |
HIP 18219 |
9.06 |
| 2026-05-15 12:00 |
03:53:46.85 |
+46:18:11.7 |
HIP 18219 |
8.85 |
| 2026-05-16 00:00 |
03:53:53.47 |
+46:18:23.3 |
HIP 18219 |
8.78 |
| 2026-05-16 12:00 |
03:54:00.09 |
+46:18:35.2 |
HIP 18219 |
8.86 |
| 2026-05-17 00:00 |
03:54:06.71 |
+46:18:47.2 |
HIP 18219 |
9.09 |
| 2026-05-17 12:00 |
03:54:13.34 |
+46:18:59.6 |
HIP 18219 |
9.45 |
| 2026-05-18 00:00 |
03:54:19.97 |
+46:19:12.1 |
HIP 18219 |
9.93 |
| 2026-05-18 12:00 |
03:54:26.60 |
+46:19:24.8 |
HIP 18219 |
10.51 |
| 2026-05-19 00:00 |
03:54:33.23 |
+46:19:37.8 |
HIP 18359 |
10.28 |
| 2026-05-19 12:00 |
03:54:39.87 |
+46:19:51.0 |
HIP 18359 |
9.15 |
| 2026-05-20 00:00 |
03:54:46.51 |
+46:20:04.4 |
HIP 18359 |
8.03 |
| 2026-05-20 12:00 |
03:54:53.15 |
+46:20:18.1 |
HIP 18359 |
6.92 |
| 2026-05-21 00:00 |
03:54:59.79 |
+46:20:31.9 |
HIP 18359 |
5.84 |
| 2026-05-21 12:00 |
03:55:06.43 |
+46:20:46.0 |
HIP 18359 |
4.81 |
| 2026-05-22 00:00 |
03:55:13.07 |
+46:21:00.3 |
HIP 18359 |
3.85 |
| 2026-05-22 12:00 |
03:55:19.71 |
+46:21:14.8 |
HIP 18359 |
3.05 |
| 2026-05-23 00:00 |
03:55:26.35 |
+46:21:29.5 |
HIP 18359 |
2.55 |
| 2026-05-23 12:00 |
03:55:32.99 |
+46:21:44.5 |
HIP 18359 |
2.55 |
| 2026-05-24 00:00 |
03:55:39.62 |
+46:21:59.6 |
HIP 18359 |
3.05 |
| 2026-05-24 12:00 |
03:55:46.26 |
+46:22:15.0 |
HIP 18359 |
3.85 |
| 2026-05-25 00:00 |
03:55:52.89 |
+46:22:30.5 |
HIP 18359 |
4.81 |
| 2026-05-25 12:00 |
03:55:59.52 |
+46:22:46.3 |
HIP 18359 |
5.85 |
| 2026-05-26 00:00 |
03:56:06.14 |
+46:23:02.3 |
HIP 18359 |
6.93 |
| 2026-05-26 12:00 |
03:56:12.76 |
+46:23:18.5 |
HIP 18359 |
8.04 |
| 2026-05-27 00:00 |
03:56:19.38 |
+46:23:34.9 |
HIP 18359 |
9.17 |
| 2026-05-27 12:00 |
03:56:26.00 |
+46:23:51.5 |
HIP 18359 |
10.31 |
| 2026-05-28 00:00 |
03:56:32.61 |
+46:24:08.3 |
HIP 18423 |
10.43 |
| 2026-05-28 12:00 |
03:56:39.21 |
+46:24:25.3 |
HIP 18423 |
10.45 |
| 2026-05-29 00:00 |
03:56:45.81 |
+46:24:42.5 |
HIP 18423 |
10.60 |
| 2026-05-29 12:00 |
03:56:52.41 |
+46:25:00.0 |
HIP 18423 |
10.87 |
| 2026-05-30 00:00 |
03:56:59.00 |
+46:25:17.6 |
HIP 18423 |
11.25 |
| 2026-05-30 12:00 |
03:57:05.58 |
+46:25:35.4 |
HIP 18423 |
11.74 |
| 2026-05-31 00:00 |
03:57:12.16 |
+46:25:53.4 |
HIP 18423 |
12.31 |
| 2026-05-31 12:00 |
03:57:18.73 |
+46:26:11.6 |
HIP 18423 |
12.96 |
| 2026-06-01 00:00 |
03:57:25.29 |
+46:26:30.0 |
HIP 18423 |
13.68 |
| 2026-06-01 12:00 |
03:57:31.85 |
+46:26:48.6 |
HIP 18423 |
14.45 |
| 2026-06-02 00:00 |
03:57:38.39 |
+46:27:07.4 |
HIP 18423 |
15.27 |