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) |
| 2026-09-20 00:00 |
07:04:24.81 |
+04:41:14.8 |
HIP 34112 |
6.94 |
| 2026-09-20 12:00 |
07:04:26.09 |
+04:40:57.0 |
HIP 34112 |
6.68 |
| 2026-09-21 00:00 |
07:04:27.35 |
+04:40:39.2 |
HIP 34112 |
6.43 |
| 2026-09-21 12:00 |
07:04:28.57 |
+04:40:21.3 |
HIP 34112 |
6.21 |
| 2026-09-22 00:00 |
07:04:29.75 |
+04:40:03.5 |
HIP 34112 |
6.00 |
| 2026-09-22 12:00 |
07:04:30.91 |
+04:39:45.7 |
HIP 34112 |
5.81 |
| 2026-09-23 00:00 |
07:04:32.03 |
+04:39:27.8 |
HIP 34112 |
5.64 |
| 2026-09-23 12:00 |
07:04:33.12 |
+04:39:10.0 |
HIP 34112 |
5.50 |
| 2026-09-24 00:00 |
07:04:34.18 |
+04:38:52.2 |
HIP 34112 |
5.38 |
| 2026-09-24 12:00 |
07:04:35.21 |
+04:38:34.4 |
HIP 34112 |
5.28 |
| 2026-09-25 00:00 |
07:04:36.20 |
+04:38:16.6 |
HIP 34112 |
5.20 |
| 2026-09-25 12:00 |
07:04:37.16 |
+04:37:58.8 |
HIP 34112 |
5.14 |
| 2026-09-26 00:00 |
07:04:38.09 |
+04:37:41.0 |
HIP 34112 |
5.11 |
| 2026-09-26 12:00 |
07:04:38.99 |
+04:37:23.2 |
HIP 34112 |
5.09 |
| 2026-09-27 00:00 |
07:04:39.85 |
+04:37:05.5 |
HIP 34112 |
5.10 |
| 2026-09-27 12:00 |
07:04:40.68 |
+04:36:47.7 |
HIP 34112 |
5.13 |
| 2026-09-28 00:00 |
07:04:41.48 |
+04:36:30.0 |
HIP 34112 |
5.17 |
| 2026-09-28 12:00 |
07:04:42.24 |
+04:36:12.3 |
HIP 34112 |
5.23 |
| 2026-09-29 00:00 |
07:04:42.97 |
+04:35:54.6 |
HIP 34112 |
5.31 |
| 2026-09-29 12:00 |
07:04:43.67 |
+04:35:36.9 |
HIP 34112 |
5.40 |
| 2026-09-30 00:00 |
07:04:44.33 |
+04:35:19.3 |
HIP 34112 |
5.50 |
| 2026-09-30 12:00 |
07:04:44.96 |
+04:35:01.6 |
HIP 34112 |
5.61 |
| 2026-10-01 00:00 |
07:04:45.56 |
+04:34:44.0 |
HIP 34112 |
5.73 |
| 2026-10-01 12:00 |
07:04:46.13 |
+04:34:26.4 |
HIP 34112 |
5.85 |
| 2026-10-02 00:00 |
07:04:46.66 |
+04:34:08.9 |
HIP 34112 |
5.99 |
| 2026-10-02 12:00 |
07:04:47.15 |
+04:33:51.3 |
HIP 34112 |
6.13 |
| 2026-10-03 00:00 |
07:04:47.61 |
+04:33:33.8 |
HIP 34112 |
6.27 |
| 2026-10-03 12:00 |
07:04:48.04 |
+04:33:16.4 |
HIP 34112 |
6.42 |
| 2026-10-04 00:00 |
07:04:48.44 |
+04:32:58.9 |
HIP 34112 |
6.57 |
| 2026-10-04 12:00 |
07:04:48.80 |
+04:32:41.5 |
HIP 34112 |
6.72 |
| 2026-10-05 00:00 |
07:04:49.12 |
+04:32:24.1 |
HIP 34112 |
6.87 |
| 2026-10-05 12:00 |
07:04:49.42 |
+04:32:06.8 |
HIP 34112 |
7.03 |
| 2026-10-06 00:00 |
07:04:49.67 |
+04:31:49.5 |
HIP 34112 |
7.19 |
| 2026-10-06 12:00 |
07:04:49.90 |
+04:31:32.3 |
HIP 34112 |
7.34 |
| 2026-10-07 00:00 |
07:04:50.08 |
+04:31:15.0 |
HIP 34112 |
7.50 |
| 2026-10-07 12:00 |
07:04:50.24 |
+04:30:57.9 |
HIP 34112 |
7.65 |
| 2026-10-08 00:00 |
07:04:50.36 |
+04:30:40.7 |
HIP 34112 |
7.81 |
| 2026-10-08 12:00 |
07:04:50.44 |
+04:30:23.7 |
HIP 34112 |
7.97 |
| 2026-10-09 00:00 |
07:04:50.49 |
+04:30:06.6 |
HIP 34112 |
8.12 |
| 2026-10-09 12:00 |
07:04:50.51 |
+04:29:49.6 |
HIP 34112 |
8.27 |
| 2026-10-10 00:00 |
07:04:50.49 |
+04:29:32.7 |
HIP 34112 |
8.43 |
| 2026-10-10 12:00 |
07:04:50.44 |
+04:29:15.8 |
HIP 34112 |
8.58 |
| 2026-10-11 00:00 |
07:04:50.35 |
+04:28:59.0 |
HIP 34112 |
8.73 |