메타데이터
| 항목 |
값 |
| Designation |
401P/McNaught |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2006-05-07T16:51:22.184640Z |
| Orbit solution date (soln_date, UTC) |
2024-06-03T15:49:51Z |
| Obs used |
268 |
| NEO |
- |
| M1 |
10.700 |
| K1 |
15.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2008-09-19.0000000 |
| e |
0.58200168 |
| q (au) |
2.379587 |
| a (au) |
5.692815 |
| i (deg) |
12.865037 |
| Ω (om, deg) |
0.095844 |
| ω (w, deg) |
310.243129 |
| M (ma, deg) |
62.788339 |
밝기
산란 + 전체 선형
$$
M_a = (12.058 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.058 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.588 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
08:22:59.42 |
+29:24:13.5 |
HIP 41283 |
33.91 |
| 2026-06-01 12:00 |
08:23:10.25 |
+29:23:10.0 |
HIP 41283 |
32.32 |
| 2026-06-02 00:00 |
08:23:21.14 |
+29:22:06.4 |
HIP 41283 |
30.86 |
| 2026-06-02 12:00 |
08:23:32.11 |
+29:21:02.7 |
HIP 41283 |
29.53 |
| 2026-06-03 00:00 |
08:23:43.15 |
+29:19:58.9 |
HIP 41283 |
28.38 |
| 2026-06-03 12:00 |
08:23:54.26 |
+29:18:55.0 |
HIP 41283 |
27.42 |
| 2026-06-04 00:00 |
08:24:05.44 |
+29:17:51.1 |
HIP 41283 |
26.68 |
| 2026-06-04 12:00 |
08:24:16.69 |
+29:16:47.0 |
HIP 41283 |
26.18 |
| 2026-06-05 00:00 |
08:24:28.00 |
+29:15:42.9 |
HIP 41283 |
25.94 |
| 2026-06-05 12:00 |
08:24:39.39 |
+29:14:38.7 |
HIP 41283 |
25.97 |
| 2026-06-06 00:00 |
08:24:50.84 |
+29:13:34.5 |
HIP 41283 |
26.28 |
| 2026-06-06 12:00 |
08:25:02.36 |
+29:12:30.2 |
HIP 41283 |
26.86 |
| 2026-06-07 00:00 |
08:25:13.94 |
+29:11:25.7 |
HIP 41283 |
27.70 |
| 2026-06-07 12:00 |
08:25:25.59 |
+29:10:21.3 |
HIP 41443 |
27.33 |
| 2026-06-08 00:00 |
08:25:37.30 |
+29:09:16.7 |
HIP 41443 |
24.60 |
| 2026-06-08 12:00 |
08:25:49.08 |
+29:08:12.1 |
HIP 41443 |
21.86 |
| 2026-06-09 00:00 |
08:26:00.93 |
+29:07:07.4 |
HIP 41443 |
19.12 |
| 2026-06-09 12:00 |
08:26:12.83 |
+29:06:02.6 |
HIP 41443 |
16.40 |
| 2026-06-10 00:00 |
08:26:24.80 |
+29:04:57.8 |
HIP 41443 |
13.70 |
| 2026-06-10 12:00 |
08:26:36.83 |
+29:03:52.9 |
HIP 41443 |
11.06 |
| 2026-06-11 00:00 |
08:26:48.92 |
+29:02:48.0 |
HIP 41443 |
8.53 |
| 2026-06-11 12:00 |
08:27:01.08 |
+29:01:43.0 |
HIP 41443 |
6.30 |
| 2026-06-12 00:00 |
08:27:13.29 |
+29:00:37.9 |
HIP 41443 |
4.80 |
| 2026-06-12 12:00 |
08:27:25.56 |
+28:59:32.8 |
HIP 41443 |
4.80 |
| 2026-06-13 00:00 |
08:27:37.90 |
+28:58:27.6 |
HIP 41443 |
6.32 |
| 2026-06-13 12:00 |
08:27:50.29 |
+28:57:22.4 |
HIP 41443 |
8.60 |
| 2026-06-14 00:00 |
08:28:02.73 |
+28:56:17.1 |
HIP 41443 |
11.20 |
| 2026-06-14 12:00 |
08:28:15.24 |
+28:55:11.8 |
HIP 41443 |
13.94 |
| 2026-06-15 00:00 |
08:28:27.80 |
+28:54:06.4 |
HIP 41443 |
16.77 |
| 2026-06-15 12:00 |
08:28:40.42 |
+28:53:01.0 |
HIP 41443 |
19.65 |
| 2026-06-16 00:00 |
08:28:53.09 |
+28:51:55.6 |
HIP 41443 |
22.56 |
| 2026-06-16 12:00 |
08:29:05.81 |
+28:50:50.1 |
HIP 41728 |
20.51 |
| 2026-06-17 00:00 |
08:29:18.59 |
+28:49:44.5 |
HIP 41728 |
18.38 |
| 2026-06-17 12:00 |
08:29:31.42 |
+28:48:39.0 |
HIP 41728 |
16.50 |
| 2026-06-18 00:00 |
08:29:44.31 |
+28:47:33.3 |
HIP 41728 |
15.00 |
| 2026-06-18 12:00 |
08:29:57.24 |
+28:46:27.7 |
HIP 41728 |
13.99 |
| 2026-06-19 00:00 |
08:30:10.23 |
+28:45:22.0 |
HIP 41728 |
13.59 |
| 2026-06-19 12:00 |
08:30:23.26 |
+28:44:16.3 |
HIP 41728 |
13.87 |
| 2026-06-20 00:00 |
08:30:36.35 |
+28:43:10.6 |
HIP 41728 |
14.79 |
| 2026-06-20 12:00 |
08:30:49.48 |
+28:42:04.8 |
HIP 41728 |
16.24 |
| 2026-06-21 00:00 |
08:31:02.66 |
+28:40:59.1 |
HIP 41728 |
18.11 |
| 2026-06-21 12:00 |
08:31:15.89 |
+28:39:53.3 |
HIP 41728 |
20.29 |
| 2026-06-22 00:00 |
08:31:29.16 |
+28:38:47.4 |
HIP 41728 |
22.69 |