C/2011 C1 (McNaught)
메타데이터
| 항목 |
값 |
| Designation |
C/2011 C1 (McNaught) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2011-04-18T00:03:10.460160Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:48Z |
| Obs used |
613 |
| NEO |
- |
| M1 |
12.700 |
| K1 |
17.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2011-04-15.0000000 |
| e |
0.99743318 |
| q (au) |
0.883378 |
| a (au) |
344.152599 |
| i (deg) |
16.825617 |
| Ω (om, deg) |
192.438367 |
| ω (w, deg) |
84.473509 |
| M (ma, deg) |
359.999537 |
밝기
산란 + 전체 선형
$$
M_a = (14.233 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.233 |
| n |
6.000 |
| gf |
0.999 |
| gb |
-0.772 |
| k |
0.800 |
| 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 |
| 2011-01-14 |
2011-03-19 |
+10.0795 |
-0.697 |
| 2011-03-19 |
2011-04-17 |
+45.5485 |
-0.310 |
| 2011-04-18 |
2011-06-07 |
-12.9373 |
-3.109 |
| 2011-06-07 |
2011-08-07 |
-10.1929 |
-2.073 |
| 2011-08-07 |
2011-11-18 |
+22.7570 |
-11.124 |
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 |
05:05:36.49 |
+07:33:15.1 |
HIP 23673 |
4.09 |
| 2026-02-03 12:00 |
05:05:34.58 |
+07:33:24.5 |
HIP 23673 |
3.60 |
| 2026-02-04 00:00 |
05:05:32.71 |
+07:33:34.0 |
HIP 23673 |
3.12 |
| 2026-02-04 12:00 |
05:05:30.85 |
+07:33:43.6 |
HIP 23673 |
2.66 |
| 2026-02-05 00:00 |
05:05:29.03 |
+07:33:53.3 |
HIP 23673 |
2.21 |
| 2026-02-05 12:00 |
05:05:27.24 |
+07:34:03.2 |
HIP 23673 |
1.79 |
| 2026-02-06 00:00 |
05:05:25.47 |
+07:34:13.1 |
HIP 23673 |
1.41 |
| 2026-02-06 12:00 |
05:05:23.73 |
+07:34:23.1 |
HIP 23673 |
1.10 |
| 2026-02-07 00:00 |
05:05:22.03 |
+07:34:33.2 |
HIP 23673 |
0.93 |
| 2026-02-07 12:00 |
05:05:20.35 |
+07:34:43.4 |
HIP 23673 |
0.97 |
| 2026-02-08 00:00 |
05:05:18.70 |
+07:34:53.7 |
HIP 23673 |
1.20 |
| 2026-02-08 12:00 |
05:05:17.08 |
+07:35:04.1 |
HIP 23673 |
1.52 |
| 2026-02-09 00:00 |
05:05:15.49 |
+07:35:14.6 |
HIP 23673 |
1.88 |
| 2026-02-09 12:00 |
05:05:13.92 |
+07:35:25.1 |
HIP 23673 |
2.27 |
| 2026-02-10 00:00 |
05:05:12.39 |
+07:35:35.8 |
HIP 23673 |
2.66 |
| 2026-02-10 12:00 |
05:05:10.89 |
+07:35:46.6 |
HIP 23673 |
3.06 |
| 2026-02-11 00:00 |
05:05:09.42 |
+07:35:57.4 |
HIP 23673 |
3.45 |
| 2026-02-11 12:00 |
05:05:07.97 |
+07:36:08.3 |
HIP 23673 |
3.84 |
| 2026-02-12 00:00 |
05:05:06.56 |
+07:36:19.3 |
HIP 23673 |
4.23 |
| 2026-02-12 12:00 |
05:05:05.18 |
+07:36:30.5 |
HIP 23673 |
4.62 |
| 2026-02-13 00:00 |
05:05:03.83 |
+07:36:41.6 |
HIP 23673 |
5.00 |
| 2026-02-13 12:00 |
05:05:02.51 |
+07:36:52.9 |
HIP 23673 |
5.37 |
| 2026-02-14 00:00 |
05:05:01.22 |
+07:37:04.3 |
HIP 23673 |
5.74 |
| 2026-02-14 12:00 |
05:04:59.96 |
+07:37:15.7 |
HIP 23673 |
6.11 |
| 2026-02-15 00:00 |
05:04:58.73 |
+07:37:27.2 |
HIP 23673 |
6.47 |
| 2026-02-15 12:00 |
05:04:57.53 |
+07:37:38.8 |
HIP 23673 |
6.82 |
| 2026-02-16 00:00 |
05:04:56.36 |
+07:37:50.5 |
HIP 23673 |
7.17 |
| 2026-02-16 12:00 |
05:04:55.22 |
+07:38:02.3 |
HIP 23673 |
7.51 |
| 2026-02-17 00:00 |
05:04:54.12 |
+07:38:14.1 |
HIP 23673 |
7.85 |
| 2026-02-17 12:00 |
05:04:53.04 |
+07:38:26.0 |
HIP 23673 |
8.18 |
| 2026-02-18 00:00 |
05:04:52.00 |
+07:38:38.0 |
HIP 23673 |
8.51 |
| 2026-02-18 12:00 |
05:04:50.99 |
+07:38:50.1 |
HIP 23673 |
8.83 |
| 2026-02-19 00:00 |
05:04:50.01 |
+07:39:02.2 |
HIP 23673 |
9.14 |
| 2026-02-19 12:00 |
05:04:49.06 |
+07:39:14.4 |
HIP 23673 |
9.45 |
| 2026-02-20 00:00 |
05:04:48.14 |
+07:39:26.7 |
HIP 23673 |
9.76 |
| 2026-02-20 12:00 |
05:04:47.25 |
+07:39:39.1 |
HIP 23673 |
10.06 |
| 2026-02-21 00:00 |
05:04:46.40 |
+07:39:51.5 |
HIP 23673 |
10.35 |
| 2026-02-21 12:00 |
05:04:45.58 |
+07:40:04.0 |
HIP 23601 |
10.63 |
| 2026-02-22 00:00 |
05:04:44.78 |
+07:40:16.5 |
HIP 23601 |
10.36 |
| 2026-02-22 12:00 |
05:04:44.02 |
+07:40:29.1 |
HIP 23601 |
10.10 |
| 2026-02-23 00:00 |
05:04:43.29 |
+07:40:41.8 |
HIP 23601 |
9.83 |
| 2026-02-23 12:00 |
05:04:42.60 |
+07:40:54.5 |
HIP 23601 |
9.57 |
| 2026-02-24 00:00 |
05:04:41.93 |
+07:41:07.3 |
HIP 23601 |
9.31 |