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) |
| 2026-07-29 00:00 |
04:07:45.53 |
+47:19:18.1 |
HIP 19134 |
17.37 |
| 2026-07-29 12:00 |
04:07:48.92 |
+47:19:51.2 |
HIP 19134 |
18.01 |
| 2026-07-30 00:00 |
04:07:52.26 |
+47:20:24.3 |
HIP 19134 |
18.65 |
| 2026-07-30 12:00 |
04:07:55.55 |
+47:20:57.4 |
HIP 19134 |
19.29 |
| 2026-07-31 00:00 |
04:07:58.80 |
+47:21:30.6 |
HIP 19134 |
19.94 |
| 2026-07-31 12:00 |
04:08:02.01 |
+47:22:03.8 |
HIP 19134 |
20.58 |
| 2026-08-01 00:00 |
04:08:05.17 |
+47:22:37.1 |
HIP 19343 |
20.96 |
| 2026-08-01 12:00 |
04:08:08.28 |
+47:23:10.3 |
HIP 19343 |
20.29 |
| 2026-08-02 00:00 |
04:08:11.35 |
+47:23:43.6 |
HIP 19343 |
19.62 |
| 2026-08-02 12:00 |
04:08:14.37 |
+47:24:17.0 |
HIP 19343 |
18.96 |
| 2026-08-03 00:00 |
04:08:17.34 |
+47:24:50.3 |
HIP 19343 |
18.31 |
| 2026-08-03 12:00 |
04:08:20.27 |
+47:25:23.7 |
HIP 19343 |
17.67 |
| 2026-08-04 00:00 |
04:08:23.15 |
+47:25:57.1 |
HIP 19343 |
17.03 |
| 2026-08-04 12:00 |
04:08:25.99 |
+47:26:30.5 |
HIP 19343 |
16.41 |
| 2026-08-05 00:00 |
04:08:28.77 |
+47:27:03.9 |
HIP 19343 |
15.80 |
| 2026-08-05 12:00 |
04:08:31.51 |
+47:27:37.3 |
HIP 19343 |
15.20 |
| 2026-08-06 00:00 |
04:08:34.20 |
+47:28:10.8 |
HIP 19343 |
14.60 |
| 2026-08-06 12:00 |
04:08:36.85 |
+47:28:44.3 |
HIP 19343 |
14.03 |
| 2026-08-07 00:00 |
04:08:39.44 |
+47:29:17.7 |
HIP 19343 |
13.46 |
| 2026-08-07 12:00 |
04:08:41.99 |
+47:29:51.2 |
HIP 19343 |
12.91 |
| 2026-08-08 00:00 |
04:08:44.48 |
+47:30:24.7 |
HIP 19343 |
12.37 |
| 2026-08-08 12:00 |
04:08:46.93 |
+47:30:58.2 |
HIP 19343 |
11.85 |
| 2026-08-09 00:00 |
04:08:49.33 |
+47:31:31.7 |
HIP 19343 |
11.34 |
| 2026-08-09 12:00 |
04:08:51.68 |
+47:32:05.2 |
HIP 19343 |
10.86 |
| 2026-08-10 00:00 |
04:08:53.98 |
+47:32:38.7 |
HIP 19343 |
10.39 |
| 2026-08-10 12:00 |
04:08:56.23 |
+47:33:12.2 |
HIP 19343 |
9.95 |
| 2026-08-11 00:00 |
04:08:58.43 |
+47:33:45.7 |
HIP 19343 |
9.53 |
| 2026-08-11 12:00 |
04:09:00.57 |
+47:34:19.1 |
HIP 19343 |
9.14 |
| 2026-08-12 00:00 |
04:09:02.67 |
+47:34:52.6 |
HIP 19343 |
8.78 |
| 2026-08-12 12:00 |
04:09:04.72 |
+47:35:26.0 |
HIP 19343 |
8.45 |
| 2026-08-13 00:00 |
04:09:06.71 |
+47:35:59.5 |
HIP 19343 |
8.15 |
| 2026-08-13 12:00 |
04:09:08.66 |
+47:36:32.9 |
HIP 19343 |
7.90 |
| 2026-08-14 00:00 |
04:09:10.55 |
+47:37:06.3 |
HIP 19343 |
7.68 |
| 2026-08-14 12:00 |
04:09:12.39 |
+47:37:39.7 |
HIP 19343 |
7.50 |
| 2026-08-15 00:00 |
04:09:14.18 |
+47:38:13.0 |
HIP 19343 |
7.37 |
| 2026-08-15 12:00 |
04:09:15.92 |
+47:38:46.3 |
HIP 19343 |
7.29 |
| 2026-08-16 00:00 |
04:09:17.60 |
+47:39:19.6 |
HIP 19343 |
7.25 |
| 2026-08-16 12:00 |
04:09:19.24 |
+47:39:52.9 |
HIP 19343 |
7.25 |
| 2026-08-17 00:00 |
04:09:20.82 |
+47:40:26.1 |
HIP 19343 |
7.30 |
| 2026-08-17 12:00 |
04:09:22.35 |
+47:40:59.3 |
HIP 19343 |
7.39 |
| 2026-08-18 00:00 |
04:09:23.82 |
+47:41:32.5 |
HIP 19343 |
7.53 |
| 2026-08-18 12:00 |
04:09:25.24 |
+47:42:05.6 |
HIP 19343 |
7.69 |
| 2026-08-19 00:00 |
04:09:26.61 |
+47:42:38.7 |
HIP 19343 |
7.90 |