메타데이터
| 항목 |
값 |
| Designation |
C/2014 M2 (Christensen) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-07-12T15:05:12.776640Z |
| Orbit solution date (soln_date, UTC) |
2022-06-28T07:55:51Z |
| Obs used |
57 |
| NEO |
- |
| M1 |
6.900 |
| K1 |
11.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2014-07-19.0000000 |
| e |
0.99274520 |
| q (au) |
6.909654 |
| a (au) |
952.425613 |
| i (deg) |
32.418761 |
| Ω (om, deg) |
245.346855 |
| ω (w, deg) |
40.275887 |
| M (ma, deg) |
0.000214 |
밝기
산란 + 전체 선형
$$
M_a = (13.645 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.645 |
| n |
2.000 |
| gf |
0.998 |
| gb |
-0.585 |
| k |
0.800 |
| δ90 |
9.999 |
| 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) |
| 2026-03-26 00:00 |
02:24:28.02 |
+27:29:04.0 |
HIP 11239 |
10.84 |
| 2026-03-26 12:00 |
02:24:33.12 |
+27:29:11.7 |
HIP 11239 |
10.49 |
| 2026-03-27 00:00 |
02:24:38.24 |
+27:29:19.6 |
HIP 11239 |
10.25 |
| 2026-03-27 12:00 |
02:24:43.39 |
+27:29:27.7 |
HIP 11239 |
10.14 |
| 2026-03-28 00:00 |
02:24:48.55 |
+27:29:36.0 |
HIP 11239 |
10.15 |
| 2026-03-28 12:00 |
02:24:53.74 |
+27:29:44.5 |
HIP 11239 |
10.29 |
| 2026-03-29 00:00 |
02:24:58.94 |
+27:29:53.2 |
HIP 11239 |
10.55 |
| 2026-03-29 12:00 |
02:25:04.16 |
+27:30:02.1 |
HIP 11239 |
10.93 |
| 2026-03-30 00:00 |
02:25:09.41 |
+27:30:11.2 |
HIP 11282 |
11.05 |
| 2026-03-30 12:00 |
02:25:14.67 |
+27:30:20.5 |
HIP 11282 |
10.73 |
| 2026-03-31 00:00 |
02:25:19.95 |
+27:30:30.0 |
HIP 11282 |
10.54 |
| 2026-03-31 12:00 |
02:25:25.25 |
+27:30:39.7 |
HIP 11282 |
10.47 |
| 2026-04-01 00:00 |
02:25:30.57 |
+27:30:49.6 |
HIP 11282 |
10.53 |
| 2026-04-01 12:00 |
02:25:35.90 |
+27:30:59.7 |
HIP 11282 |
10.72 |
| 2026-04-02 00:00 |
02:25:41.26 |
+27:31:09.9 |
HIP 11282 |
11.04 |
| 2026-04-02 12:00 |
02:25:46.63 |
+27:31:20.4 |
HIP 11282 |
11.48 |
| 2026-04-03 00:00 |
02:25:52.01 |
+27:31:31.1 |
HIP 11282 |
12.02 |
| 2026-04-03 12:00 |
02:25:57.42 |
+27:31:41.9 |
HIP 11282 |
12.65 |
| 2026-04-04 00:00 |
02:26:02.84 |
+27:31:53.0 |
HIP 11282 |
13.37 |
| 2026-04-04 12:00 |
02:26:08.27 |
+27:32:04.2 |
HIP 11282 |
14.15 |
| 2026-04-05 00:00 |
02:26:13.73 |
+27:32:15.6 |
HIP 11282 |
14.99 |
| 2026-04-05 12:00 |
02:26:19.19 |
+27:32:27.3 |
HIP 11282 |
15.88 |
| 2026-04-06 00:00 |
02:26:24.68 |
+27:32:39.0 |
HIP 11282 |
16.82 |
| 2026-04-06 12:00 |
02:26:30.17 |
+27:32:51.0 |
HIP 11282 |
17.79 |
| 2026-04-07 00:00 |
02:26:35.69 |
+27:33:03.2 |
HIP 11282 |
18.80 |
| 2026-04-07 12:00 |
02:26:41.21 |
+27:33:15.5 |
HIP 11282 |
19.83 |
| 2026-04-08 00:00 |
02:26:46.75 |
+27:33:28.0 |
HIP 11282 |
20.89 |
| 2026-04-08 12:00 |
02:26:52.31 |
+27:33:40.7 |
HIP 11282 |
21.97 |
| 2026-04-09 00:00 |
02:26:57.88 |
+27:33:53.6 |
HIP 11282 |
23.07 |
| 2026-04-09 12:00 |
02:27:03.46 |
+27:34:06.7 |
HIP 11282 |
24.18 |
| 2026-04-10 00:00 |
02:27:09.05 |
+27:34:19.9 |
HIP 11282 |
25.31 |
| 2026-04-10 12:00 |
02:27:14.66 |
+27:34:33.3 |
HIP 11282 |
26.45 |
| 2026-04-11 00:00 |
02:27:20.28 |
+27:34:46.9 |
HIP 11282 |
27.61 |
| 2026-04-11 12:00 |
02:27:25.91 |
+27:35:00.6 |
HIP 11554 |
27.26 |
| 2026-04-12 00:00 |
02:27:31.55 |
+27:35:14.5 |
HIP 11554 |
26.56 |
| 2026-04-12 12:00 |
02:27:37.21 |
+27:35:28.6 |
HIP 11554 |
25.91 |
| 2026-04-13 00:00 |
02:27:42.87 |
+27:35:42.9 |
HIP 11554 |
25.31 |
| 2026-04-13 12:00 |
02:27:48.55 |
+27:35:57.3 |
HIP 11554 |
24.76 |
| 2026-04-14 00:00 |
02:27:54.23 |
+27:36:11.9 |
HIP 11554 |
24.27 |
| 2026-04-14 12:00 |
02:27:59.93 |
+27:36:26.6 |
HIP 11554 |
23.83 |
| 2026-04-15 00:00 |
02:28:05.63 |
+27:36:41.5 |
HIP 11554 |
23.46 |
| 2026-04-15 12:00 |
02:28:11.35 |
+27:36:56.6 |
HIP 11554 |
23.16 |
| 2026-04-16 00:00 |
02:28:17.07 |
+27:37:11.8 |
HIP 11554 |
22.93 |