메타데이터
| 항목 |
값 |
| Designation |
336P/McNaught |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2006-08-18T08:36:24.405120Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:28:30Z |
| Obs used |
164 |
| NEO |
- |
| M1 |
8.200 |
| K1 |
19.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2008-07-30.0000000 |
| e |
0.45286158 |
| q (au) |
2.633290 |
| a (au) |
4.812840 |
| i (deg) |
18.562108 |
| Ω (om, deg) |
299.239956 |
| ω (w, deg) |
313.964670 |
| M (ma, deg) |
66.429832 |
밝기
산란 + 전체 선형
$$
M_a = (12.526 + 3.855\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.526 |
| n |
3.855 |
| gf |
1.000 |
| gb |
-0.500 |
| 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) |
| 2026-05-12 00:00 |
08:02:39.64 |
+16:45:19.4 |
HIP 39416 |
12.75 |
| 2026-05-12 12:00 |
08:02:55.05 |
+16:44:11.2 |
HIP 39416 |
10.26 |
| 2026-05-13 00:00 |
08:03:10.60 |
+16:43:02.4 |
HIP 39416 |
8.82 |
| 2026-05-13 12:00 |
08:03:26.29 |
+16:41:53.1 |
HIP 39460 |
7.73 |
| 2026-05-14 00:00 |
08:03:42.13 |
+16:40:43.3 |
HIP 39460 |
3.83 |
| 2026-05-14 12:00 |
08:03:58.10 |
+16:39:32.9 |
HIP 39460 |
1.00 |
| 2026-05-15 00:00 |
08:04:14.20 |
+16:38:22.0 |
HIP 39460 |
4.43 |
| 2026-05-15 12:00 |
08:04:30.45 |
+16:37:10.6 |
HIP 39460 |
8.45 |
| 2026-05-16 00:00 |
08:04:46.83 |
+16:35:58.7 |
HIP 39460 |
12.54 |
| 2026-05-16 12:00 |
08:05:03.34 |
+16:34:46.2 |
HIP 39460 |
16.67 |
| 2026-05-17 00:00 |
08:05:19.98 |
+16:33:33.2 |
HIP 39460 |
20.83 |
| 2026-05-17 12:00 |
08:05:36.76 |
+16:32:19.7 |
HIP 39460 |
25.03 |
| 2026-05-18 00:00 |
08:05:53.67 |
+16:31:05.7 |
HIP 39460 |
29.26 |
| 2026-05-18 12:00 |
08:06:10.71 |
+16:29:51.1 |
HIP 39812 |
28.28 |
| 2026-05-19 00:00 |
08:06:27.88 |
+16:28:36.0 |
HIP 39812 |
24.01 |
| 2026-05-19 12:00 |
08:06:45.17 |
+16:27:20.3 |
HIP 39812 |
19.74 |
| 2026-05-20 00:00 |
08:07:02.60 |
+16:26:04.1 |
HIP 39812 |
15.46 |
| 2026-05-20 12:00 |
08:07:20.15 |
+16:24:47.4 |
HIP 39812 |
11.22 |
| 2026-05-21 00:00 |
08:07:37.82 |
+16:23:30.1 |
HIP 39812 |
7.14 |
| 2026-05-21 12:00 |
08:07:55.61 |
+16:22:12.3 |
HIP 39812 |
3.91 |
| 2026-05-22 00:00 |
08:08:13.53 |
+16:20:54.0 |
HIP 39812 |
4.42 |
| 2026-05-22 12:00 |
08:08:31.57 |
+16:19:35.1 |
HIP 39812 |
8.03 |
| 2026-05-23 00:00 |
08:08:49.73 |
+16:18:15.7 |
HIP 39812 |
12.30 |
| 2026-05-23 12:00 |
08:09:08.01 |
+16:16:55.8 |
HIP 39812 |
16.74 |
| 2026-05-24 00:00 |
08:09:26.41 |
+16:15:35.3 |
HIP 39812 |
21.28 |
| 2026-05-24 12:00 |
08:09:44.93 |
+16:14:14.3 |
HIP 39812 |
25.87 |
| 2026-05-25 00:00 |
08:10:03.56 |
+16:12:52.8 |
HIP 40115 |
22.37 |
| 2026-05-25 12:00 |
08:10:22.30 |
+16:11:30.7 |
HIP 40115 |
17.94 |
| 2026-05-26 00:00 |
08:10:41.16 |
+16:10:08.1 |
HIP 40115 |
13.66 |
| 2026-05-26 12:00 |
08:11:00.14 |
+16:08:45.0 |
HIP 40115 |
9.79 |
| 2026-05-27 00:00 |
08:11:19.22 |
+16:07:21.3 |
HIP 40115 |
7.09 |
| 2026-05-27 12:00 |
08:11:38.42 |
+16:05:57.1 |
HIP 40130 |
2.49 |
| 2026-05-28 00:00 |
08:11:57.73 |
+16:04:32.3 |
HIP 40130 |
2.53 |
| 2026-05-28 12:00 |
08:12:17.15 |
+16:03:07.0 |
HIP 40130 |
7.35 |
| 2026-05-29 00:00 |
08:12:36.67 |
+16:01:41.2 |
HIP 40130 |
12.24 |
| 2026-05-29 12:00 |
08:12:56.31 |
+16:00:14.8 |
HIP 40130 |
17.17 |
| 2026-05-30 00:00 |
08:13:16.05 |
+15:58:47.9 |
HIP 40130 |
22.13 |
| 2026-05-30 12:00 |
08:13:35.89 |
+15:57:20.5 |
HIP 40410 |
21.41 |
| 2026-05-31 00:00 |
08:13:55.84 |
+15:55:52.5 |
HIP 40410 |
17.68 |
| 2026-05-31 12:00 |
08:14:15.90 |
+15:54:24.0 |
HIP 40410 |
14.71 |
| 2026-06-01 00:00 |
08:14:36.06 |
+15:52:54.9 |
HIP 40410 |
13.08 |
| 2026-06-01 12:00 |
08:14:56.32 |
+15:51:25.3 |
HIP 40410 |
13.32 |
| 2026-06-02 00:00 |
08:15:16.69 |
+15:49:55.1 |
HIP 40410 |
15.36 |