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) |
| 2026-09-20 00:00 |
03:50:25.91 |
+27:27:33.7 |
HIP 17924 |
6.22 |
| 2026-09-20 12:00 |
03:50:30.40 |
+27:29:24.6 |
HIP 17924 |
7.73 |
| 2026-09-21 00:00 |
03:50:34.51 |
+27:31:14.3 |
HIP 17924 |
9.38 |
| 2026-09-21 12:00 |
03:50:38.24 |
+27:33:02.8 |
HIP 17924 |
11.08 |
| 2026-09-22 00:00 |
03:50:41.59 |
+27:34:50.2 |
HIP 17924 |
12.79 |
| 2026-09-22 12:00 |
03:50:44.55 |
+27:36:36.4 |
HIP 17924 |
14.48 |
| 2026-09-23 00:00 |
03:50:47.13 |
+27:38:21.5 |
HIP 17924 |
16.15 |
| 2026-09-23 12:00 |
03:50:49.32 |
+27:40:05.3 |
HIP 17924 |
17.78 |
| 2026-09-24 00:00 |
03:50:51.13 |
+27:41:48.0 |
HIP 17924 |
19.37 |
| 2026-09-24 12:00 |
03:50:52.56 |
+27:43:29.4 |
HIP 17924 |
20.92 |
| 2026-09-25 00:00 |
03:50:53.60 |
+27:45:09.7 |
HIP 17924 |
22.43 |
| 2026-09-25 12:00 |
03:50:54.26 |
+27:46:48.7 |
HIP 17924 |
23.91 |
| 2026-09-26 00:00 |
03:50:54.52 |
+27:48:26.4 |
HIP 17924 |
25.34 |
| 2026-09-26 12:00 |
03:50:54.41 |
+27:50:03.0 |
HIP 17924 |
26.74 |
| 2026-09-27 00:00 |
03:50:53.91 |
+27:51:38.2 |
HIP 18119 |
26.41 |
| 2026-09-27 12:00 |
03:50:53.02 |
+27:53:12.2 |
HIP 18119 |
25.62 |
| 2026-09-28 00:00 |
03:50:51.74 |
+27:54:45.0 |
HIP 18119 |
25.00 |
| 2026-09-28 12:00 |
03:50:50.08 |
+27:56:16.4 |
HIP 18119 |
24.54 |
| 2026-09-29 00:00 |
03:50:48.03 |
+27:57:46.5 |
HIP 18119 |
24.26 |
| 2026-09-29 12:00 |
03:50:45.59 |
+27:59:15.4 |
HIP 18119 |
24.17 |
| 2026-09-30 00:00 |
03:50:42.77 |
+28:00:42.9 |
HIP 18119 |
24.28 |
| 2026-09-30 12:00 |
03:50:39.56 |
+28:02:09.0 |
HIP 18119 |
24.57 |
| 2026-10-01 00:00 |
03:50:35.96 |
+28:03:33.8 |
HIP 18119 |
25.04 |
| 2026-10-01 12:00 |
03:50:31.98 |
+28:04:57.3 |
HIP 18119 |
25.70 |
| 2026-10-02 00:00 |
03:50:27.61 |
+28:06:19.4 |
HIP 18119 |
26.53 |
| 2026-10-02 12:00 |
03:50:22.85 |
+28:07:40.0 |
HIP 18119 |
27.53 |
| 2026-10-03 00:00 |
03:50:17.71 |
+28:08:59.3 |
HIP 18119 |
28.67 |
| 2026-10-03 12:00 |
03:50:12.19 |
+28:10:17.2 |
HIP 17871 |
29.75 |
| 2026-10-04 00:00 |
03:50:06.28 |
+28:11:33.6 |
HIP 17871 |
28.12 |
| 2026-10-04 12:00 |
03:49:59.98 |
+28:12:48.6 |
HIP 17871 |
26.50 |
| 2026-10-05 00:00 |
03:49:53.30 |
+28:14:02.2 |
HIP 17871 |
24.93 |
| 2026-10-05 12:00 |
03:49:46.25 |
+28:15:14.2 |
HIP 17871 |
23.41 |
| 2026-10-06 00:00 |
03:49:38.81 |
+28:16:24.8 |
HIP 17871 |
21.98 |
| 2026-10-06 12:00 |
03:49:30.99 |
+28:17:34.0 |
HIP 17871 |
20.67 |
| 2026-10-07 00:00 |
03:49:22.80 |
+28:18:41.6 |
HIP 17871 |
19.51 |
| 2026-10-07 12:00 |
03:49:14.23 |
+28:19:47.7 |
HIP 17871 |
18.56 |
| 2026-10-08 00:00 |
03:49:05.28 |
+28:20:52.2 |
HIP 17871 |
17.88 |
| 2026-10-08 12:00 |
03:48:55.96 |
+28:21:55.2 |
HIP 17871 |
17.51 |
| 2026-10-09 00:00 |
03:48:46.28 |
+28:22:56.7 |
HIP 17871 |
17.50 |
| 2026-10-09 12:00 |
03:48:36.22 |
+28:23:56.6 |
HIP 17871 |
17.87 |
| 2026-10-10 00:00 |
03:48:25.80 |
+28:24:54.9 |
HIP 17871 |
18.63 |
| 2026-10-10 12:00 |
03:48:15.02 |
+28:25:51.7 |
HIP 17871 |
19.76 |
| 2026-10-11 00:00 |
03:48:03.87 |
+28:26:46.8 |
HIP 17662 |
20.17 |