C/2010 X1 (Elenin)
메타데이터
| 항목 |
값 |
| Designation |
C/2010 X1 (Elenin) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2011-09-10T17:16:26.166720Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:47Z |
| Obs used |
2235 |
| NEO |
- |
| M1 |
12.600 |
| K1 |
6.250 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2011-03-31.0000000 |
| e |
1.00006725 |
| q (au) |
0.482421 |
| a (au) |
-7173.388485 |
| i (deg) |
1.839568 |
| Ω (om, deg) |
323.235147 |
| ω (w, deg) |
343.798118 |
| M (ma, deg) |
-0.000266 |
밝기
산란 + 전체 선형
$$
M_a = (12.213 + 2.747\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.213 |
| n |
2.747 |
| gf |
0.800 |
| gb |
-0.772 |
| k |
0.993 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2010-12-10 |
2011-07-01 |
+1.4551 |
-0.725 |
| 2011-07-01 |
2011-08-03 |
+17.0332 |
-4.129 |
| 2011-08-03 |
2011-09-07 |
-9.5190 |
-4.347 |
| 2011-09-10 |
2011-11-27 |
-9.0033 |
+0.677 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
07:36:21.48 |
+22:33:00.3 |
HIP 37121 |
22.12 |
| 2026-02-03 12:00 |
07:36:17.88 |
+22:33:08.1 |
HIP 37121 |
22.88 |
| 2026-02-04 00:00 |
07:36:14.29 |
+22:33:15.9 |
HIP 37121 |
23.64 |
| 2026-02-04 12:00 |
07:36:10.72 |
+22:33:23.6 |
HIP 37121 |
24.41 |
| 2026-02-05 00:00 |
07:36:07.16 |
+22:33:31.3 |
HIP 36853 |
24.30 |
| 2026-02-05 12:00 |
07:36:03.62 |
+22:33:38.9 |
HIP 36853 |
23.69 |
| 2026-02-06 00:00 |
07:36:00.09 |
+22:33:46.5 |
HIP 36853 |
23.09 |
| 2026-02-06 12:00 |
07:35:56.58 |
+22:33:54.0 |
HIP 36853 |
22.52 |
| 2026-02-07 00:00 |
07:35:53.08 |
+22:34:01.5 |
HIP 36853 |
21.96 |
| 2026-02-07 12:00 |
07:35:49.60 |
+22:34:09.0 |
HIP 36853 |
21.42 |
| 2026-02-08 00:00 |
07:35:46.13 |
+22:34:16.3 |
HIP 36853 |
20.89 |
| 2026-02-08 12:00 |
07:35:42.68 |
+22:34:23.7 |
HIP 36853 |
20.39 |
| 2026-02-09 00:00 |
07:35:39.25 |
+22:34:31.0 |
HIP 36853 |
19.92 |
| 2026-02-09 12:00 |
07:35:35.84 |
+22:34:38.2 |
HIP 36853 |
19.46 |
| 2026-02-10 00:00 |
07:35:32.44 |
+22:34:45.4 |
HIP 36853 |
19.03 |
| 2026-02-10 12:00 |
07:35:29.06 |
+22:34:52.5 |
HIP 36853 |
18.63 |
| 2026-02-11 00:00 |
07:35:25.70 |
+22:34:59.6 |
HIP 36853 |
18.25 |
| 2026-02-11 12:00 |
07:35:22.36 |
+22:35:06.6 |
HIP 36853 |
17.90 |
| 2026-02-12 00:00 |
07:35:19.03 |
+22:35:13.6 |
HIP 36853 |
17.58 |
| 2026-02-12 12:00 |
07:35:15.73 |
+22:35:20.5 |
HIP 36853 |
17.30 |
| 2026-02-13 00:00 |
07:35:12.44 |
+22:35:27.4 |
HIP 36853 |
17.04 |
| 2026-02-13 12:00 |
07:35:09.18 |
+22:35:34.2 |
HIP 36853 |
16.81 |
| 2026-02-14 00:00 |
07:35:05.93 |
+22:35:41.0 |
HIP 36853 |
16.62 |
| 2026-02-14 12:00 |
07:35:02.71 |
+22:35:47.7 |
HIP 36853 |
16.46 |
| 2026-02-15 00:00 |
07:34:59.50 |
+22:35:54.3 |
HIP 36853 |
16.34 |
| 2026-02-15 12:00 |
07:34:56.31 |
+22:36:00.9 |
HIP 36853 |
16.24 |
| 2026-02-16 00:00 |
07:34:53.15 |
+22:36:07.4 |
HIP 36853 |
16.19 |
| 2026-02-16 12:00 |
07:34:50.01 |
+22:36:13.9 |
HIP 36853 |
16.16 |
| 2026-02-17 00:00 |
07:34:46.89 |
+22:36:20.3 |
HIP 36853 |
16.17 |
| 2026-02-17 12:00 |
07:34:43.79 |
+22:36:26.7 |
HIP 36853 |
16.21 |
| 2026-02-18 00:00 |
07:34:40.71 |
+22:36:33.0 |
HIP 36853 |
16.28 |
| 2026-02-18 12:00 |
07:34:37.66 |
+22:36:39.2 |
HIP 36853 |
16.38 |
| 2026-02-19 00:00 |
07:34:34.62 |
+22:36:45.4 |
HIP 36853 |
16.52 |
| 2026-02-19 12:00 |
07:34:31.61 |
+22:36:51.5 |
HIP 36853 |
16.67 |
| 2026-02-20 00:00 |
07:34:28.63 |
+22:36:57.6 |
HIP 36853 |
16.86 |
| 2026-02-20 12:00 |
07:34:25.66 |
+22:37:03.5 |
HIP 36853 |
17.07 |
| 2026-02-21 00:00 |
07:34:22.72 |
+22:37:09.5 |
HIP 36853 |
17.30 |
| 2026-02-21 12:00 |
07:34:19.81 |
+22:37:15.3 |
HIP 36853 |
17.55 |
| 2026-02-22 00:00 |
07:34:16.91 |
+22:37:21.1 |
HIP 36708 |
17.62 |
| 2026-02-22 12:00 |
07:34:14.05 |
+22:37:26.9 |
HIP 36708 |
17.00 |
| 2026-02-23 00:00 |
07:34:11.20 |
+22:37:32.6 |
HIP 36708 |
16.38 |
| 2026-02-23 12:00 |
07:34:08.38 |
+22:37:38.2 |
HIP 36708 |
15.78 |
| 2026-02-24 00:00 |
07:34:05.59 |
+22:37:43.7 |
HIP 36708 |
15.19 |