C/2010 J2 (McNaught)
메타데이터
| 항목 |
값 |
| Designation |
C/2010 J2 (McNaught) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2010-06-03T20:45:36.622080Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:44Z |
| Obs used |
543 |
| NEO |
- |
| M1 |
10.100 |
| K1 |
9.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2010-08-16.0000000 |
| e |
0.99945919 |
| q (au) |
3.386996 |
| a (au) |
6262.872230 |
| i (deg) |
125.851540 |
| Ω (om, deg) |
311.794846 |
| ω (w, deg) |
4.616553 |
| M (ma, deg) |
0.000145 |
밝기
산란 + 전체 선형
$$
M_a = (11.081 + 2.443\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.081 |
| n |
2.443 |
| gf |
0.992 |
| gb |
-1.000 |
| k |
1.000 |
| δ90 |
9.980 |
| 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) |
| 2026-02-03 00:00 |
11:07:59.11 |
+35:11:35.4 |
HIP 54369 |
22.08 |
| 2026-02-03 12:00 |
11:07:55.10 |
+35:12:05.0 |
HIP 54369 |
22.32 |
| 2026-02-04 00:00 |
11:07:51.06 |
+35:12:34.6 |
HIP 54369 |
22.59 |
| 2026-02-04 12:00 |
11:07:47.00 |
+35:13:04.0 |
HIP 54369 |
22.90 |
| 2026-02-05 00:00 |
11:07:42.92 |
+35:13:33.2 |
HIP 54239 |
23.18 |
| 2026-02-05 12:00 |
11:07:38.82 |
+35:14:02.4 |
HIP 54239 |
22.39 |
| 2026-02-06 00:00 |
11:07:34.70 |
+35:14:31.4 |
HIP 54239 |
21.60 |
| 2026-02-06 12:00 |
11:07:30.57 |
+35:15:00.2 |
HIP 54239 |
20.82 |
| 2026-02-07 00:00 |
11:07:26.41 |
+35:15:28.9 |
HIP 54239 |
20.05 |
| 2026-02-07 12:00 |
11:07:22.23 |
+35:15:57.5 |
HIP 54239 |
19.30 |
| 2026-02-08 00:00 |
11:07:18.04 |
+35:16:25.9 |
HIP 54239 |
18.57 |
| 2026-02-08 12:00 |
11:07:13.83 |
+35:16:54.1 |
HIP 54239 |
17.85 |
| 2026-02-09 00:00 |
11:07:09.60 |
+35:17:22.2 |
HIP 54239 |
17.16 |
| 2026-02-09 12:00 |
11:07:05.35 |
+35:17:50.2 |
HIP 54239 |
16.49 |
| 2026-02-10 00:00 |
11:07:01.09 |
+35:18:17.9 |
HIP 54239 |
15.85 |
| 2026-02-10 12:00 |
11:06:56.81 |
+35:18:45.6 |
HIP 54239 |
15.25 |
| 2026-02-11 00:00 |
11:06:52.52 |
+35:19:13.0 |
HIP 54239 |
14.68 |
| 2026-02-11 12:00 |
11:06:48.20 |
+35:19:40.3 |
HIP 54239 |
14.15 |
| 2026-02-12 00:00 |
11:06:43.88 |
+35:20:07.4 |
HIP 54239 |
13.68 |
| 2026-02-12 12:00 |
11:06:39.53 |
+35:20:34.4 |
HIP 54239 |
13.25 |
| 2026-02-13 00:00 |
11:06:35.17 |
+35:21:01.1 |
HIP 54239 |
12.89 |
| 2026-02-13 12:00 |
11:06:30.80 |
+35:21:27.7 |
HIP 54239 |
12.58 |
| 2026-02-14 00:00 |
11:06:26.41 |
+35:21:54.1 |
HIP 54239 |
12.35 |
| 2026-02-14 12:00 |
11:06:22.01 |
+35:22:20.3 |
HIP 54239 |
12.19 |
| 2026-02-15 00:00 |
11:06:17.60 |
+35:22:46.4 |
HIP 54239 |
12.11 |
| 2026-02-15 12:00 |
11:06:13.17 |
+35:23:12.2 |
HIP 54239 |
12.10 |
| 2026-02-16 00:00 |
11:06:08.73 |
+35:23:37.9 |
HIP 54239 |
12.18 |
| 2026-02-16 12:00 |
11:06:04.27 |
+35:24:03.3 |
HIP 54239 |
12.33 |
| 2026-02-17 00:00 |
11:05:59.81 |
+35:24:28.6 |
HIP 54239 |
12.56 |
| 2026-02-17 12:00 |
11:05:55.33 |
+35:24:53.7 |
HIP 54239 |
12.85 |
| 2026-02-18 00:00 |
11:05:50.84 |
+35:25:18.5 |
HIP 54239 |
13.22 |
| 2026-02-18 12:00 |
11:05:46.34 |
+35:25:43.2 |
HIP 54239 |
13.64 |
| 2026-02-19 00:00 |
11:05:41.83 |
+35:26:07.6 |
HIP 54239 |
14.12 |
| 2026-02-19 12:00 |
11:05:37.31 |
+35:26:31.9 |
HIP 54165 |
14.08 |
| 2026-02-20 00:00 |
11:05:32.78 |
+35:26:55.9 |
HIP 54165 |
13.15 |
| 2026-02-20 12:00 |
11:05:28.24 |
+35:27:19.7 |
HIP 54165 |
12.23 |
| 2026-02-21 00:00 |
11:05:23.69 |
+35:27:43.3 |
HIP 54165 |
11.33 |
| 2026-02-21 12:00 |
11:05:19.14 |
+35:28:06.7 |
HIP 54165 |
10.45 |
| 2026-02-22 00:00 |
11:05:14.57 |
+35:28:29.9 |
HIP 54165 |
9.59 |
| 2026-02-22 12:00 |
11:05:10.00 |
+35:28:52.9 |
HIP 54165 |
8.77 |
| 2026-02-23 00:00 |
11:05:05.42 |
+35:29:15.6 |
HIP 54165 |
8.00 |
| 2026-02-23 12:00 |
11:05:00.83 |
+35:29:38.1 |
HIP 54165 |
7.28 |
| 2026-02-24 00:00 |
11:04:56.23 |
+35:30:00.4 |
HIP 54165 |
6.64 |