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) |
| 2026-05-12 00:00 |
02:33:19.17 |
+27:53:26.5 |
HIP 11801 |
23.16 |
| 2026-05-12 12:00 |
02:33:24.92 |
+27:53:48.1 |
HIP 11801 |
23.71 |
| 2026-05-13 00:00 |
02:33:30.67 |
+27:54:09.7 |
HIP 11801 |
24.31 |
| 2026-05-13 12:00 |
02:33:36.40 |
+27:54:31.4 |
HIP 11801 |
24.96 |
| 2026-05-14 00:00 |
02:33:42.13 |
+27:54:53.3 |
HIP 11801 |
25.66 |
| 2026-05-14 12:00 |
02:33:47.84 |
+27:55:15.1 |
HIP 11801 |
26.41 |
| 2026-05-15 00:00 |
02:33:53.55 |
+27:55:37.1 |
HIP 11801 |
27.20 |
| 2026-05-15 12:00 |
02:33:59.25 |
+27:55:59.1 |
HIP 11801 |
28.02 |
| 2026-05-16 00:00 |
02:34:04.94 |
+27:56:21.2 |
HIP 11801 |
28.88 |
| 2026-05-16 12:00 |
02:34:10.62 |
+27:56:43.4 |
HIP 11801 |
29.77 |
| 2026-05-17 00:00 |
02:34:16.29 |
+27:57:05.7 |
HIP 11801 |
30.68 |
| 2026-05-17 12:00 |
02:34:21.95 |
+27:57:28.0 |
HIP 11801 |
31.62 |
| 2026-05-18 00:00 |
02:34:27.60 |
+27:57:50.3 |
HIP 11801 |
32.58 |
| 2026-05-18 12:00 |
02:34:33.23 |
+27:58:12.8 |
HIP 11801 |
33.56 |
| 2026-05-19 00:00 |
02:34:38.86 |
+27:58:35.3 |
HIP 11801 |
34.56 |
| 2026-05-19 12:00 |
02:34:44.47 |
+27:58:57.8 |
HIP 11801 |
35.58 |
| 2026-05-20 00:00 |
02:34:50.07 |
+27:59:20.4 |
HIP 11801 |
36.61 |
| 2026-05-20 12:00 |
02:34:55.66 |
+27:59:43.1 |
HIP 11801 |
37.65 |
| 2026-05-21 00:00 |
02:35:01.24 |
+28:00:05.8 |
HIP 11801 |
38.71 |
| 2026-05-21 12:00 |
02:35:06.80 |
+28:00:28.6 |
HIP 11977 |
38.81 |
| 2026-05-22 00:00 |
02:35:12.35 |
+28:00:51.5 |
HIP 11977 |
38.72 |
| 2026-05-22 12:00 |
02:35:17.88 |
+28:01:14.3 |
HIP 12255 |
38.15 |
| 2026-05-23 00:00 |
02:35:23.41 |
+28:01:37.3 |
HIP 12255 |
36.90 |
| 2026-05-23 12:00 |
02:35:28.91 |
+28:02:00.2 |
HIP 12255 |
35.66 |
| 2026-05-24 00:00 |
02:35:34.40 |
+28:02:23.3 |
HIP 12255 |
34.42 |
| 2026-05-24 12:00 |
02:35:39.88 |
+28:02:46.3 |
HIP 12255 |
33.19 |
| 2026-05-25 00:00 |
02:35:45.35 |
+28:03:09.4 |
HIP 12255 |
31.96 |
| 2026-05-25 12:00 |
02:35:50.79 |
+28:03:32.6 |
HIP 12255 |
30.74 |
| 2026-05-26 00:00 |
02:35:56.22 |
+28:03:55.8 |
HIP 12255 |
29.53 |
| 2026-05-26 12:00 |
02:36:01.64 |
+28:04:19.0 |
HIP 12255 |
28.32 |
| 2026-05-27 00:00 |
02:36:07.04 |
+28:04:42.2 |
HIP 12255 |
27.11 |
| 2026-05-27 12:00 |
02:36:12.42 |
+28:05:05.5 |
HIP 12255 |
25.92 |
| 2026-05-28 00:00 |
02:36:17.79 |
+28:05:28.9 |
HIP 12255 |
24.73 |
| 2026-05-28 12:00 |
02:36:23.14 |
+28:05:52.2 |
HIP 12255 |
23.56 |
| 2026-05-29 00:00 |
02:36:28.47 |
+28:06:15.6 |
HIP 12255 |
22.39 |
| 2026-05-29 12:00 |
02:36:33.78 |
+28:06:39.0 |
HIP 12255 |
21.23 |
| 2026-05-30 00:00 |
02:36:39.08 |
+28:07:02.5 |
HIP 12255 |
20.08 |
| 2026-05-30 12:00 |
02:36:44.36 |
+28:07:26.0 |
HIP 12255 |
18.95 |
| 2026-05-31 00:00 |
02:36:49.62 |
+28:07:49.5 |
HIP 12255 |
17.83 |
| 2026-05-31 12:00 |
02:36:54.86 |
+28:08:13.0 |
HIP 12255 |
16.74 |
| 2026-06-01 00:00 |
02:37:00.09 |
+28:08:36.5 |
HIP 12255 |
15.66 |
| 2026-06-01 12:00 |
02:37:05.29 |
+28:09:00.1 |
HIP 12255 |
14.60 |
| 2026-06-02 00:00 |
02:37:10.47 |
+28:09:23.7 |
HIP 12255 |
13.58 |