C/2013 K1 (Christensen)
메타데이터
| 항목 |
값 |
| Designation |
C/2013 K1 (Christensen) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2013-05-30T03:59:46.325760Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:36Z |
| Obs used |
52 |
| NEO |
- |
| M1 |
18.400 |
| K1 |
9.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2013-05-31.0000000 |
| e |
0.98811567 |
| q (au) |
0.948263 |
| a (au) |
79.791095 |
| i (deg) |
42.341521 |
| Ω (om, deg) |
125.908709 |
| ω (w, deg) |
171.332563 |
| M (ma, deg) |
0.001153 |
밝기
산란 + 전체 선형
$$
M_a = (17.867 + 5.957\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
17.867 |
| n |
5.957 |
| gf |
1.000 |
| gb |
-1.000 |
| 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) |
| 2026-02-03 00:00 |
06:51:31.06 |
+04:02:00.7 |
HIP 32974 |
10.00 |
| 2026-02-03 12:00 |
06:51:27.57 |
+04:02:18.3 |
HIP 32974 |
10.75 |
| 2026-02-04 00:00 |
06:51:24.10 |
+04:02:35.9 |
HIP 32974 |
11.51 |
| 2026-02-04 12:00 |
06:51:20.65 |
+04:02:53.7 |
HIP 32974 |
12.29 |
| 2026-02-05 00:00 |
06:51:17.22 |
+04:03:11.6 |
HIP 32974 |
13.08 |
| 2026-02-05 12:00 |
06:51:13.81 |
+04:03:29.6 |
HIP 32974 |
13.88 |
| 2026-02-06 00:00 |
06:51:10.43 |
+04:03:47.7 |
HIP 32974 |
14.69 |
| 2026-02-06 12:00 |
06:51:07.07 |
+04:04:05.9 |
HIP 32974 |
15.49 |
| 2026-02-07 00:00 |
06:51:03.73 |
+04:04:24.3 |
HIP 32974 |
16.31 |
| 2026-02-07 12:00 |
06:51:00.42 |
+04:04:42.7 |
HIP 32974 |
17.12 |
| 2026-02-08 00:00 |
06:50:57.13 |
+04:05:01.3 |
HIP 32974 |
17.93 |
| 2026-02-08 12:00 |
06:50:53.87 |
+04:05:20.0 |
HIP 32974 |
18.75 |
| 2026-02-09 00:00 |
06:50:50.63 |
+04:05:38.8 |
HIP 32974 |
19.56 |
| 2026-02-09 12:00 |
06:50:47.41 |
+04:05:57.7 |
HIP 32974 |
20.37 |
| 2026-02-10 00:00 |
06:50:44.22 |
+04:06:16.7 |
HIP 32974 |
21.18 |
| 2026-02-10 12:00 |
06:50:41.06 |
+04:06:35.8 |
HIP 32974 |
21.98 |
| 2026-02-11 00:00 |
06:50:37.92 |
+04:06:55.0 |
HIP 32974 |
22.79 |
| 2026-02-11 12:00 |
06:50:34.80 |
+04:07:14.3 |
HIP 32974 |
23.59 |
| 2026-02-12 00:00 |
06:50:31.71 |
+04:07:33.6 |
HIP 32974 |
24.38 |
| 2026-02-12 12:00 |
06:50:28.65 |
+04:07:53.1 |
HIP 32802 |
25.06 |
| 2026-02-13 00:00 |
06:50:25.62 |
+04:08:12.7 |
HIP 32802 |
24.66 |
| 2026-02-13 12:00 |
06:50:22.61 |
+04:08:32.4 |
HIP 32802 |
24.29 |
| 2026-02-14 00:00 |
06:50:19.63 |
+04:08:52.2 |
HIP 32802 |
23.93 |
| 2026-02-14 12:00 |
06:50:16.67 |
+04:09:12.0 |
HIP 32802 |
23.59 |
| 2026-02-15 00:00 |
06:50:13.74 |
+04:09:32.0 |
HIP 32802 |
23.28 |
| 2026-02-15 12:00 |
06:50:10.85 |
+04:09:52.0 |
HIP 32802 |
22.99 |
| 2026-02-16 00:00 |
06:50:07.98 |
+04:10:12.1 |
HIP 32802 |
22.72 |
| 2026-02-16 12:00 |
06:50:05.13 |
+04:10:32.3 |
HIP 32802 |
22.47 |
| 2026-02-17 00:00 |
06:50:02.32 |
+04:10:52.6 |
HIP 32802 |
22.24 |
| 2026-02-17 12:00 |
06:49:59.53 |
+04:11:13.0 |
HIP 32802 |
22.04 |
| 2026-02-18 00:00 |
06:49:56.78 |
+04:11:33.4 |
HIP 32802 |
21.86 |
| 2026-02-18 12:00 |
06:49:54.05 |
+04:11:53.9 |
HIP 32802 |
21.70 |
| 2026-02-19 00:00 |
06:49:51.35 |
+04:12:14.5 |
HIP 32802 |
21.56 |
| 2026-02-19 12:00 |
06:49:48.69 |
+04:12:35.2 |
HIP 32802 |
21.45 |
| 2026-02-20 00:00 |
06:49:46.05 |
+04:12:55.9 |
HIP 32802 |
21.36 |
| 2026-02-20 12:00 |
06:49:43.44 |
+04:13:16.8 |
HIP 32802 |
21.28 |
| 2026-02-21 00:00 |
06:49:40.86 |
+04:13:37.6 |
HIP 32802 |
21.23 |
| 2026-02-21 12:00 |
06:49:38.31 |
+04:13:58.6 |
HIP 32802 |
21.21 |
| 2026-02-22 00:00 |
06:49:35.80 |
+04:14:19.6 |
HIP 32802 |
21.20 |
| 2026-02-22 12:00 |
06:49:33.31 |
+04:14:40.6 |
HIP 32802 |
21.21 |
| 2026-02-23 00:00 |
06:49:30.86 |
+04:15:01.8 |
HIP 32802 |
21.23 |
| 2026-02-23 12:00 |
06:49:28.43 |
+04:15:23.0 |
HIP 32802 |
21.28 |
| 2026-02-24 00:00 |
06:49:26.04 |
+04:15:44.2 |
HIP 32802 |
21.35 |