메타데이터
| 항목 |
값 |
| Designation |
191P/McNaught |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2007-09-13T14:40:41.669760Z |
| Orbit solution date (soln_date, UTC) |
2024-10-05T23:12:39Z |
| Obs used |
787 |
| NEO |
- |
| M1 |
13.800 |
| K1 |
8.250 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2010-02-25.0000000 |
| e |
0.42072245 |
| q (au) |
2.046442 |
| a (au) |
3.532749 |
| i (deg) |
8.759005 |
| Ω (om, deg) |
106.503897 |
| ω (w, deg) |
274.213416 |
| M (ma, deg) |
132.906520 |
밝기
산란 + 전체 선형
$$
M_a = (11.838 + 4.649\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.838 |
| n |
4.649 |
| gf |
0.918 |
| gb |
-0.898 |
| k |
1.000 |
| δ90 |
6.580 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
16:59:47.25 |
-17:14:57.4 |
HIP 83278 |
20.90 |
| 2026-05-12 12:00 |
16:59:29.54 |
-17:14:40.3 |
HIP 83131 |
20.69 |
| 2026-05-13 00:00 |
16:59:11.65 |
-17:14:23.3 |
HIP 83131 |
20.30 |
| 2026-05-13 12:00 |
16:58:53.58 |
-17:14:06.4 |
HIP 83131 |
20.82 |
| 2026-05-14 00:00 |
16:58:35.33 |
-17:13:49.5 |
HIP 83131 |
22.22 |
| 2026-05-14 12:00 |
16:58:16.91 |
-17:13:32.7 |
HIP 83131 |
24.35 |
| 2026-05-15 00:00 |
16:57:58.32 |
-17:13:16.0 |
HIP 83131 |
27.07 |
| 2026-05-15 12:00 |
16:57:39.56 |
-17:12:59.3 |
HIP 83131 |
30.24 |
| 2026-05-16 00:00 |
16:57:20.64 |
-17:12:42.7 |
HIP 82861 |
30.78 |
| 2026-05-16 12:00 |
16:57:01.55 |
-17:12:26.2 |
HIP 82861 |
27.98 |
| 2026-05-17 00:00 |
16:56:42.31 |
-17:12:09.7 |
HIP 82861 |
25.68 |
| 2026-05-17 12:00 |
16:56:22.92 |
-17:11:53.4 |
HIP 82861 |
24.05 |
| 2026-05-18 00:00 |
16:56:03.38 |
-17:11:37.1 |
HIP 82861 |
23.24 |
| 2026-05-18 12:00 |
16:55:43.68 |
-17:11:21.0 |
HIP 82861 |
23.37 |
| 2026-05-19 00:00 |
16:55:23.85 |
-17:11:04.9 |
HIP 82861 |
24.45 |
| 2026-05-19 12:00 |
16:55:03.88 |
-17:10:49.0 |
HIP 82861 |
26.37 |
| 2026-05-20 00:00 |
16:54:43.77 |
-17:10:33.2 |
HIP 82861 |
28.98 |
| 2026-05-20 12:00 |
16:54:23.52 |
-17:10:17.5 |
HIP 82861 |
32.13 |
| 2026-05-21 00:00 |
16:54:03.15 |
-17:10:01.9 |
HIP 82861 |
35.68 |
| 2026-05-21 12:00 |
16:53:42.66 |
-17:09:46.4 |
HIP 82861 |
39.55 |
| 2026-05-22 00:00 |
16:53:22.04 |
-17:09:31.1 |
HIP 82861 |
43.66 |
| 2026-05-22 12:00 |
16:53:01.31 |
-17:09:15.9 |
HIP 82684 |
47.25 |
| 2026-05-23 00:00 |
16:52:40.46 |
-17:09:00.9 |
HIP 82442 |
44.06 |
| 2026-05-23 12:00 |
16:52:19.50 |
-17:08:45.9 |
HIP 82442 |
41.19 |
| 2026-05-24 00:00 |
16:51:58.44 |
-17:08:31.2 |
HIP 82442 |
38.75 |
| 2026-05-24 12:00 |
16:51:37.27 |
-17:08:16.6 |
HIP 82442 |
36.85 |
| 2026-05-25 00:00 |
16:51:16.01 |
-17:08:02.1 |
HIP 82331 |
34.78 |
| 2026-05-25 12:00 |
16:50:54.65 |
-17:07:47.8 |
HIP 82331 |
30.79 |
| 2026-05-26 00:00 |
16:50:33.20 |
-17:07:33.7 |
HIP 82331 |
27.16 |
| 2026-05-26 12:00 |
16:50:11.66 |
-17:07:19.8 |
HIP 82331 |
24.08 |
| 2026-05-27 00:00 |
16:49:50.04 |
-17:07:06.0 |
HIP 82331 |
21.80 |
| 2026-05-27 12:00 |
16:49:28.34 |
-17:06:52.4 |
HIP 82331 |
20.60 |
| 2026-05-28 00:00 |
16:49:06.56 |
-17:06:39.0 |
HIP 82331 |
20.67 |
| 2026-05-28 12:00 |
16:48:44.71 |
-17:06:25.7 |
HIP 82331 |
22.03 |
| 2026-05-29 00:00 |
16:48:22.79 |
-17:06:12.7 |
HIP 82331 |
24.47 |
| 2026-05-29 12:00 |
16:48:00.81 |
-17:05:59.9 |
HIP 82331 |
27.71 |
| 2026-05-30 00:00 |
16:47:38.77 |
-17:05:47.2 |
HIP 82102 |
25.04 |
| 2026-05-30 12:00 |
16:47:16.68 |
-17:05:34.8 |
HIP 82089 |
20.60 |
| 2026-05-31 00:00 |
16:46:54.53 |
-17:05:22.6 |
HIP 82089 |
16.34 |
| 2026-05-31 12:00 |
16:46:32.33 |
-17:05:10.6 |
HIP 82089 |
12.88 |
| 2026-06-01 00:00 |
16:46:10.09 |
-17:04:58.8 |
HIP 82089 |
11.01 |
| 2026-06-01 12:00 |
16:45:47.80 |
-17:04:47.3 |
HIP 82089 |
11.54 |
| 2026-06-02 00:00 |
16:45:25.48 |
-17:04:36.0 |
HIP 82089 |
14.23 |