메타데이터
| 항목 |
값 |
| Designation |
C/2011 L1 (McNaught) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2010-12-18T07:14:56.696640Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:51Z |
| Obs used |
140 |
| NEO |
- |
| M1 |
10.400 |
| K1 |
12.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2011-06-22.0000000 |
| e |
0.79679852 |
| q (au) |
2.242374 |
| a (au) |
11.035223 |
| i (deg) |
65.512678 |
| Ω (om, deg) |
252.363846 |
| ω (w, deg) |
294.470660 |
| M (ma, deg) |
4.992746 |
밝기
산란 + 전체 선형
$$
M_a = (13.123 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.123 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.781 |
| k |
0.999 |
| 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 |
| 2011-06-02 |
2012-07-23 |
-10.7811 |
+4.882 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
22:59:16.75 |
+62:29:39.0 |
HIP 113538 |
17.25 |
| 2026-07-29 12:00 |
22:59:08.54 |
+62:30:21.3 |
HIP 113538 |
16.76 |
| 2026-07-30 00:00 |
22:59:00.27 |
+62:31:02.9 |
HIP 113538 |
16.34 |
| 2026-07-30 12:00 |
22:58:51.93 |
+62:31:43.9 |
HIP 113301 |
15.97 |
| 2026-07-31 00:00 |
22:58:43.52 |
+62:32:24.2 |
HIP 113301 |
14.83 |
| 2026-07-31 12:00 |
22:58:35.03 |
+62:33:03.9 |
HIP 113301 |
13.68 |
| 2026-08-01 00:00 |
22:58:26.48 |
+62:33:42.9 |
HIP 113301 |
12.54 |
| 2026-08-01 12:00 |
22:58:17.86 |
+62:34:21.3 |
HIP 113301 |
11.41 |
| 2026-08-02 00:00 |
22:58:09.18 |
+62:34:59.0 |
HIP 113301 |
10.28 |
| 2026-08-02 12:00 |
22:58:00.43 |
+62:35:36.1 |
HIP 113301 |
9.15 |
| 2026-08-03 00:00 |
22:57:51.61 |
+62:36:12.4 |
HIP 113301 |
8.04 |
| 2026-08-03 12:00 |
22:57:42.72 |
+62:36:48.1 |
HIP 113301 |
6.95 |
| 2026-08-04 00:00 |
22:57:33.78 |
+62:37:23.2 |
HIP 113301 |
5.89 |
| 2026-08-04 12:00 |
22:57:24.76 |
+62:37:57.5 |
HIP 113301 |
4.87 |
| 2026-08-05 00:00 |
22:57:15.69 |
+62:38:31.2 |
HIP 113301 |
3.94 |
| 2026-08-05 12:00 |
22:57:06.55 |
+62:39:04.1 |
HIP 113301 |
3.18 |
| 2026-08-06 00:00 |
22:56:57.36 |
+62:39:36.4 |
HIP 113301 |
2.71 |
| 2026-08-06 12:00 |
22:56:48.10 |
+62:40:08.0 |
HIP 113301 |
2.72 |
| 2026-08-07 00:00 |
22:56:38.78 |
+62:40:38.9 |
HIP 113306 |
3.13 |
| 2026-08-07 12:00 |
22:56:29.40 |
+62:41:09.0 |
HIP 113306 |
3.21 |
| 2026-08-08 00:00 |
22:56:19.97 |
+62:41:38.5 |
HIP 113306 |
3.70 |
| 2026-08-08 12:00 |
22:56:10.48 |
+62:42:07.2 |
HIP 113306 |
4.47 |
| 2026-08-09 00:00 |
22:56:00.93 |
+62:42:35.3 |
HIP 113306 |
5.40 |
| 2026-08-09 12:00 |
22:55:51.33 |
+62:43:02.6 |
HIP 113306 |
6.43 |
| 2026-08-10 00:00 |
22:55:41.67 |
+62:43:29.2 |
HIP 113306 |
7.51 |
| 2026-08-10 12:00 |
22:55:31.96 |
+62:43:55.0 |
HIP 113306 |
8.62 |
| 2026-08-11 00:00 |
22:55:22.19 |
+62:44:20.1 |
HIP 113306 |
9.76 |
| 2026-08-11 12:00 |
22:55:12.38 |
+62:44:44.5 |
HIP 113306 |
10.91 |
| 2026-08-12 00:00 |
22:55:02.51 |
+62:45:08.2 |
HIP 113306 |
12.08 |
| 2026-08-12 12:00 |
22:54:52.60 |
+62:45:31.1 |
HIP 113065 |
11.81 |
| 2026-08-13 00:00 |
22:54:42.63 |
+62:45:53.3 |
HIP 113065 |
11.52 |
| 2026-08-13 12:00 |
22:54:32.62 |
+62:46:14.7 |
HIP 113065 |
11.34 |
| 2026-08-14 00:00 |
22:54:22.56 |
+62:46:35.4 |
HIP 113065 |
11.27 |
| 2026-08-14 12:00 |
22:54:12.46 |
+62:46:55.3 |
HIP 113065 |
11.31 |
| 2026-08-15 00:00 |
22:54:02.31 |
+62:47:14.5 |
HIP 113065 |
11.47 |
| 2026-08-15 12:00 |
22:53:52.12 |
+62:47:32.9 |
HIP 113065 |
11.74 |
| 2026-08-16 00:00 |
22:53:41.89 |
+62:47:50.5 |
HIP 113065 |
12.12 |
| 2026-08-16 12:00 |
22:53:31.62 |
+62:48:07.4 |
HIP 113065 |
12.58 |
| 2026-08-17 00:00 |
22:53:21.30 |
+62:48:23.6 |
HIP 113065 |
13.13 |
| 2026-08-17 12:00 |
22:53:10.95 |
+62:48:38.9 |
HIP 113065 |
13.76 |
| 2026-08-18 00:00 |
22:53:00.56 |
+62:48:53.5 |
HIP 112876 |
14.03 |
| 2026-08-18 12:00 |
22:52:50.13 |
+62:49:07.4 |
HIP 112876 |
13.01 |
| 2026-08-19 00:00 |
22:52:39.67 |
+62:49:20.4 |
HIP 112876 |
12.04 |