메타데이터
| 항목 |
값 |
| Designation |
C/2007 M1 (McNaught) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2008-08-11T17:35:21.920640Z |
| Orbit solution date (soln_date, UTC) |
2022-07-06T03:12:21Z |
| Obs used |
232 |
| NEO |
- |
| M1 |
6.600 |
| K1 |
9.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2008-10-11.0000000 |
| e |
0.99520236 |
| q (au) |
7.474661 |
| a (au) |
1557.985505 |
| i (deg) |
139.721499 |
| Ω (om, deg) |
326.808769 |
| ω (w, deg) |
52.635857 |
| M (ma, deg) |
0.000966 |
밝기
산란 + 전체 선형
$$
M_a = (4.972 + 4.027\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
4.972 |
| n |
4.027 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
1.000 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
10:06:47.34 |
+14:40:43.3 |
HIP 49623 |
31.37 |
| 2026-06-01 12:00 |
10:06:47.56 |
+14:40:34.8 |
HIP 49551 |
31.31 |
| 2026-06-02 00:00 |
10:06:47.81 |
+14:40:26.2 |
HIP 49551 |
31.16 |
| 2026-06-02 12:00 |
10:06:48.09 |
+14:40:17.4 |
HIP 49551 |
31.00 |
| 2026-06-03 00:00 |
10:06:48.40 |
+14:40:08.4 |
HIP 49551 |
30.85 |
| 2026-06-03 12:00 |
10:06:48.74 |
+14:39:59.4 |
HIP 49551 |
30.69 |
| 2026-06-04 00:00 |
10:06:49.10 |
+14:39:50.1 |
HIP 49551 |
30.52 |
| 2026-06-04 12:00 |
10:06:49.50 |
+14:39:40.8 |
HIP 49551 |
30.36 |
| 2026-06-05 00:00 |
10:06:49.92 |
+14:39:31.3 |
HIP 49551 |
30.19 |
| 2026-06-05 12:00 |
10:06:50.37 |
+14:39:21.6 |
HIP 49551 |
30.02 |
| 2026-06-06 00:00 |
10:06:50.84 |
+14:39:11.8 |
HIP 49551 |
29.85 |
| 2026-06-06 12:00 |
10:06:51.35 |
+14:39:01.9 |
HIP 49551 |
29.67 |
| 2026-06-07 00:00 |
10:06:51.88 |
+14:38:51.8 |
HIP 49551 |
29.49 |
| 2026-06-07 12:00 |
10:06:52.44 |
+14:38:41.6 |
HIP 49551 |
29.31 |
| 2026-06-08 00:00 |
10:06:53.03 |
+14:38:31.3 |
HIP 49551 |
29.13 |
| 2026-06-08 12:00 |
10:06:53.65 |
+14:38:20.8 |
HIP 49551 |
28.94 |
| 2026-06-09 00:00 |
10:06:54.29 |
+14:38:10.2 |
HIP 49551 |
28.75 |
| 2026-06-09 12:00 |
10:06:54.96 |
+14:37:59.4 |
HIP 49551 |
28.57 |
| 2026-06-10 00:00 |
10:06:55.66 |
+14:37:48.5 |
HIP 49551 |
28.37 |
| 2026-06-10 12:00 |
10:06:56.39 |
+14:37:37.5 |
HIP 49551 |
28.18 |
| 2026-06-11 00:00 |
10:06:57.14 |
+14:37:26.3 |
HIP 49551 |
27.99 |
| 2026-06-11 12:00 |
10:06:57.92 |
+14:37:15.0 |
HIP 49551 |
27.79 |
| 2026-06-12 00:00 |
10:06:58.72 |
+14:37:03.5 |
HIP 49551 |
27.59 |
| 2026-06-12 12:00 |
10:06:59.56 |
+14:36:52.0 |
HIP 49551 |
27.39 |
| 2026-06-13 00:00 |
10:07:00.42 |
+14:36:40.3 |
HIP 49551 |
27.19 |
| 2026-06-13 12:00 |
10:07:01.30 |
+14:36:28.4 |
HIP 49551 |
26.99 |
| 2026-06-14 00:00 |
10:07:02.22 |
+14:36:16.5 |
HIP 49551 |
26.79 |
| 2026-06-14 12:00 |
10:07:03.16 |
+14:36:04.4 |
HIP 49551 |
26.59 |
| 2026-06-15 00:00 |
10:07:04.12 |
+14:35:52.1 |
HIP 49551 |
26.39 |
| 2026-06-15 12:00 |
10:07:05.11 |
+14:35:39.8 |
HIP 49551 |
26.19 |
| 2026-06-16 00:00 |
10:07:06.13 |
+14:35:27.3 |
HIP 49551 |
25.99 |
| 2026-06-16 12:00 |
10:07:07.17 |
+14:35:14.7 |
HIP 49551 |
25.79 |
| 2026-06-17 00:00 |
10:07:08.24 |
+14:35:02.0 |
HIP 49551 |
25.59 |
| 2026-06-17 12:00 |
10:07:09.34 |
+14:34:49.1 |
HIP 49551 |
25.39 |
| 2026-06-18 00:00 |
10:07:10.46 |
+14:34:36.1 |
HIP 49551 |
25.20 |
| 2026-06-18 12:00 |
10:07:11.60 |
+14:34:23.0 |
HIP 49551 |
25.00 |
| 2026-06-19 00:00 |
10:07:12.78 |
+14:34:09.8 |
HIP 49551 |
24.81 |
| 2026-06-19 12:00 |
10:07:13.97 |
+14:33:56.4 |
HIP 49551 |
24.62 |
| 2026-06-20 00:00 |
10:07:15.19 |
+14:33:42.9 |
HIP 49551 |
24.43 |
| 2026-06-20 12:00 |
10:07:16.44 |
+14:33:29.4 |
HIP 49551 |
24.25 |
| 2026-06-21 00:00 |
10:07:17.71 |
+14:33:15.6 |
HIP 49551 |
24.07 |
| 2026-06-21 12:00 |
10:07:19.00 |
+14:33:01.8 |
HIP 49551 |
23.89 |
| 2026-06-22 00:00 |
10:07:20.32 |
+14:32:47.9 |
HIP 49551 |
23.72 |