메타데이터
| 항목 |
값 |
| Designation |
303P/NEAT |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2014-10-10T07:58:46.963200Z |
| Orbit solution date (soln_date, UTC) |
2025-09-09T12:42:51Z |
| Obs used |
251 |
| NEO |
- |
| M1 |
16.200 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2010-04-12.0000000 |
| e |
0.51039462 |
| q (au) |
2.483970 |
| a (au) |
5.073413 |
| i (deg) |
7.038016 |
| Ω (om, deg) |
348.196199 |
| ω (w, deg) |
356.711414 |
| M (ma, deg) |
218.350575 |
밝기
산란 + 전체 선형
$$
M_a = (9.989 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.989 |
| n |
6.000 |
| gf |
0.999 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
23:52:23.30 |
-00:05:53.7 |
HIP 117887 |
37.94 |
| 2026-03-26 12:00 |
23:53:17.23 |
+00:00:49.8 |
HIP 117887 |
23.08 |
| 2026-03-27 00:00 |
23:54:11.13 |
+00:07:33.2 |
HIP 117887 |
8.93 |
| 2026-03-27 12:00 |
23:55:05.01 |
+00:14:16.5 |
HIP 117887 |
8.98 |
| 2026-03-28 00:00 |
23:55:58.86 |
+00:20:59.6 |
HIP 118025 |
10.50 |
| 2026-03-28 12:00 |
23:56:52.67 |
+00:27:42.6 |
HIP 118025 |
6.62 |
| 2026-03-29 00:00 |
23:57:46.46 |
+00:34:25.4 |
HIP 118025 |
20.72 |
| 2026-03-29 12:00 |
23:58:40.23 |
+00:41:08.0 |
HIP 1 |
31.40 |
| 2026-03-30 00:00 |
23:59:33.96 |
+00:47:50.5 |
HIP 1 |
18.69 |
| 2026-03-30 12:00 |
00:00:27.66 |
+00:54:32.8 |
HIP 51 |
9.57 |
| 2026-03-31 00:00 |
00:01:21.34 |
+01:01:15.0 |
HIP 51 |
12.04 |
| 2026-03-31 12:00 |
00:02:14.99 |
+01:07:56.9 |
HIP 51 |
25.45 |
| 2026-04-01 00:00 |
00:03:08.61 |
+01:14:38.6 |
HIP 384 |
30.08 |
| 2026-04-01 12:00 |
00:04:02.21 |
+01:21:20.1 |
HIP 384 |
15.48 |
| 2026-04-02 00:00 |
00:04:55.77 |
+01:28:01.5 |
HIP 384 |
4.82 |
| 2026-04-02 12:00 |
00:05:49.31 |
+01:34:42.6 |
HIP 384 |
15.95 |
| 2026-04-03 00:00 |
00:06:42.82 |
+01:41:23.5 |
HIP 604 |
9.28 |
| 2026-04-03 12:00 |
00:07:36.30 |
+01:48:04.1 |
HIP 604 |
9.18 |
| 2026-04-04 00:00 |
00:08:29.75 |
+01:54:44.5 |
HIP 604 |
22.99 |
| 2026-04-04 12:00 |
00:09:23.18 |
+02:01:24.7 |
HIP 870 |
19.47 |
| 2026-04-05 00:00 |
00:10:16.58 |
+02:08:04.6 |
HIP 870 |
7.68 |
| 2026-04-05 12:00 |
00:11:09.95 |
+02:14:44.3 |
HIP 868 |
8.34 |
| 2026-04-06 00:00 |
00:12:03.29 |
+02:21:23.7 |
HIP 868 |
21.25 |
| 2026-04-06 12:00 |
00:12:56.61 |
+02:28:02.8 |
HIP 1040 |
28.95 |
| 2026-04-07 00:00 |
00:13:49.89 |
+02:34:41.7 |
HIP 1040 |
25.48 |
| 2026-04-07 12:00 |
00:14:43.15 |
+02:41:20.3 |
HIP 1264 |
17.12 |
| 2026-04-08 00:00 |
00:15:36.38 |
+02:47:58.6 |
HIP 1264 |
6.97 |
| 2026-04-08 12:00 |
00:16:29.59 |
+02:54:36.5 |
HIP 1264 |
15.66 |
| 2026-04-09 00:00 |
00:17:22.76 |
+03:01:14.2 |
HIP 1264 |
29.71 |
| 2026-04-09 12:00 |
00:18:15.91 |
+03:07:51.6 |
HIP 1609 |
28.96 |
| 2026-04-10 00:00 |
00:19:09.03 |
+03:14:28.6 |
HIP 1609 |
19.58 |
| 2026-04-10 12:00 |
00:20:02.12 |
+03:21:05.4 |
HIP 1653 |
11.91 |
| 2026-04-11 00:00 |
00:20:55.18 |
+03:27:41.7 |
HIP 1653 |
2.97 |
| 2026-04-11 12:00 |
00:21:48.21 |
+03:34:17.8 |
HIP 1653 |
17.70 |
| 2026-04-12 00:00 |
00:22:41.21 |
+03:40:53.5 |
HIP 1894 |
19.51 |
| 2026-04-12 12:00 |
00:23:34.19 |
+03:47:28.8 |
HIP 1894 |
5.98 |
| 2026-04-13 00:00 |
00:24:27.13 |
+03:54:03.8 |
HIP 1894 |
11.27 |
| 2026-04-13 12:00 |
00:25:20.05 |
+04:00:38.4 |
HIP 2046 |
10.45 |
| 2026-04-14 00:00 |
00:26:12.94 |
+04:07:12.6 |
HIP 2046 |
12.39 |
| 2026-04-14 12:00 |
00:27:05.79 |
+04:13:46.4 |
HIP 2195 |
24.52 |
| 2026-04-15 00:00 |
00:27:58.62 |
+04:20:19.9 |
HIP 2195 |
16.53 |
| 2026-04-15 12:00 |
00:28:51.41 |
+04:26:52.9 |
HIP 2195 |
19.44 |
| 2026-04-16 00:00 |
00:29:44.18 |
+04:33:25.5 |
HIP 2391 |
17.24 |