메타데이터
| 항목 |
값 |
| Designation |
350P/McNaught |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2017-12-17T19:28:38.161920Z |
| Orbit solution date (soln_date, UTC) |
2026-03-23T09:04:28Z |
| Obs used |
56 |
| NEO |
- |
| M1 |
7.600 |
| K1 |
19.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2020-10-10.0000000 |
| e |
0.09090107 |
| q (au) |
3.723373 |
| a (au) |
4.095674 |
| i (deg) |
7.356406 |
| Ω (om, deg) |
65.376108 |
| ω (w, deg) |
140.643806 |
| M (ma, deg) |
122.142293 |
밝기
산란 + 전체 선형
$$
M_a = (13.379 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.379 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.721 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
14:17:12.37 |
-07:17:49.0 |
HIP 69758 |
13.57 |
| 2026-03-26 12:00 |
14:16:58.94 |
-07:16:45.1 |
HIP 69758 |
12.59 |
| 2026-03-27 00:00 |
14:16:45.30 |
-07:15:40.6 |
HIP 69758 |
12.53 |
| 2026-03-27 12:00 |
14:16:31.45 |
-07:14:35.6 |
HIP 69700 |
13.33 |
| 2026-03-28 00:00 |
14:16:17.41 |
-07:13:30.0 |
HIP 69700 |
10.66 |
| 2026-03-28 12:00 |
14:16:03.16 |
-07:12:23.9 |
HIP 69700 |
8.71 |
| 2026-03-29 00:00 |
14:15:48.71 |
-07:11:17.3 |
HIP 69700 |
8.11 |
| 2026-03-29 12:00 |
14:15:34.07 |
-07:10:10.2 |
HIP 69700 |
9.19 |
| 2026-03-30 00:00 |
14:15:19.24 |
-07:09:02.6 |
HIP 69700 |
11.52 |
| 2026-03-30 12:00 |
14:15:04.22 |
-07:07:54.6 |
HIP 69556 |
12.66 |
| 2026-03-31 00:00 |
14:14:49.01 |
-07:06:46.2 |
HIP 69556 |
8.73 |
| 2026-03-31 12:00 |
14:14:33.62 |
-07:05:37.3 |
HIP 69556 |
4.79 |
| 2026-04-01 00:00 |
14:14:18.05 |
-07:04:28.0 |
HIP 69556 |
1.16 |
| 2026-04-01 12:00 |
14:14:02.30 |
-07:03:18.4 |
HIP 69556 |
3.55 |
| 2026-04-02 00:00 |
14:13:46.38 |
-07:02:08.3 |
HIP 69485 |
5.94 |
| 2026-04-02 12:00 |
14:13:30.29 |
-07:00:57.9 |
HIP 69485 |
3.41 |
| 2026-04-03 00:00 |
14:13:14.04 |
-06:59:47.2 |
HIP 69485 |
4.79 |
| 2026-04-03 12:00 |
14:12:57.61 |
-06:58:36.2 |
HIP 69485 |
8.38 |
| 2026-04-04 00:00 |
14:12:41.03 |
-06:57:24.9 |
HIP 69485 |
12.43 |
| 2026-04-04 12:00 |
14:12:24.30 |
-06:56:13.3 |
HIP 69485 |
16.64 |
| 2026-04-05 00:00 |
14:12:07.41 |
-06:55:01.4 |
HIP 69485 |
20.93 |
| 2026-04-05 12:00 |
14:11:50.36 |
-06:53:49.4 |
HIP 69485 |
25.28 |
| 2026-04-06 00:00 |
14:11:33.18 |
-06:52:37.0 |
HIP 69236 |
24.87 |
| 2026-04-06 12:00 |
14:11:15.85 |
-06:51:24.5 |
HIP 69236 |
21.32 |
| 2026-04-07 00:00 |
14:10:58.38 |
-06:50:11.9 |
HIP 69236 |
18.18 |
| 2026-04-07 12:00 |
14:10:40.77 |
-06:48:59.0 |
HIP 69236 |
15.69 |
| 2026-04-08 00:00 |
14:10:23.04 |
-06:47:46.0 |
HIP 69236 |
14.26 |
| 2026-04-08 12:00 |
14:10:05.17 |
-06:46:33.0 |
HIP 69236 |
14.23 |
| 2026-04-09 00:00 |
14:09:47.18 |
-06:45:19.8 |
HIP 69236 |
15.64 |
| 2026-04-09 12:00 |
14:09:29.08 |
-06:44:06.5 |
HIP 69236 |
18.18 |
| 2026-04-10 00:00 |
14:09:10.85 |
-06:42:53.2 |
HIP 69236 |
21.47 |
| 2026-04-10 12:00 |
14:08:52.52 |
-06:41:39.9 |
HIP 69236 |
25.23 |
| 2026-04-11 00:00 |
14:08:34.07 |
-06:40:26.5 |
HIP 69236 |
29.30 |
| 2026-04-11 12:00 |
14:08:15.53 |
-06:39:13.2 |
HIP 69236 |
33.56 |
| 2026-04-12 00:00 |
14:07:56.88 |
-06:37:59.9 |
HIP 69236 |
37.98 |
| 2026-04-12 12:00 |
14:07:38.14 |
-06:36:46.6 |
HIP 68892 |
36.26 |
| 2026-04-13 00:00 |
14:07:19.30 |
-06:35:33.4 |
HIP 68892 |
32.89 |
| 2026-04-13 12:00 |
14:07:00.38 |
-06:34:20.4 |
HIP 68892 |
29.92 |
| 2026-04-14 00:00 |
14:06:41.38 |
-06:33:07.4 |
HIP 68892 |
27.49 |
| 2026-04-14 12:00 |
14:06:22.30 |
-06:31:54.6 |
HIP 68789 |
23.26 |
| 2026-04-15 00:00 |
14:06:03.14 |
-06:30:42.0 |
HIP 68789 |
18.63 |
| 2026-04-15 12:00 |
14:05:43.92 |
-06:29:29.6 |
HIP 68789 |
14.18 |
| 2026-04-16 00:00 |
14:05:24.63 |
-06:28:17.4 |
HIP 68789 |
10.14 |