메타데이터
| 항목 |
값 |
| Designation |
P/2003 F2 (NEAT) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2003-04-14T18:46:40.431360Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:27Z |
| Obs used |
74 |
| NEO |
- |
| M1 |
13.700 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2003-04-06.0000000 |
| e |
0.54224939 |
| q (au) |
2.977207 |
| a (au) |
6.503993 |
| i (deg) |
11.604533 |
| Ω (om, deg) |
359.028575 |
| ω (w, deg) |
191.592692 |
| M (ma, deg) |
359.478147 |
밝기
산란 + 전체 선형
$$
M_a = (15.477 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.477 |
| n |
2.000 |
| gf |
0.982 |
| gb |
-0.948 |
| k |
1.000 |
| δ90 |
9.631 |
| 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 |
00:06:55.42 |
+00:23:28.9 |
HIP 511 |
20.07 |
| 2026-05-12 12:00 |
00:07:04.36 |
+00:24:34.6 |
HIP 511 |
22.30 |
| 2026-05-13 00:00 |
00:07:13.24 |
+00:25:39.9 |
HIP 511 |
24.56 |
| 2026-05-13 12:00 |
00:07:22.05 |
+00:26:44.8 |
HIP 511 |
26.85 |
| 2026-05-14 00:00 |
00:07:30.82 |
+00:27:49.3 |
HIP 717 |
24.55 |
| 2026-05-14 12:00 |
00:07:39.52 |
+00:28:53.5 |
HIP 717 |
22.15 |
| 2026-05-15 00:00 |
00:07:48.16 |
+00:29:57.2 |
HIP 717 |
19.77 |
| 2026-05-15 12:00 |
00:07:56.74 |
+00:31:00.6 |
HIP 717 |
17.42 |
| 2026-05-16 00:00 |
00:08:05.27 |
+00:32:03.6 |
HIP 717 |
15.10 |
| 2026-05-16 12:00 |
00:08:13.73 |
+00:33:06.2 |
HIP 717 |
12.81 |
| 2026-05-17 00:00 |
00:08:22.13 |
+00:34:08.4 |
HIP 717 |
10.56 |
| 2026-05-17 12:00 |
00:08:30.47 |
+00:35:10.2 |
HIP 717 |
8.38 |
| 2026-05-18 00:00 |
00:08:38.74 |
+00:36:11.6 |
HIP 717 |
6.33 |
| 2026-05-18 12:00 |
00:08:46.96 |
+00:37:12.6 |
HIP 717 |
4.53 |
| 2026-05-19 00:00 |
00:08:55.11 |
+00:38:13.2 |
HIP 717 |
3.40 |
| 2026-05-19 12:00 |
00:09:03.19 |
+00:39:13.3 |
HIP 717 |
3.59 |
| 2026-05-20 00:00 |
00:09:11.21 |
+00:40:13.1 |
HIP 717 |
4.93 |
| 2026-05-20 12:00 |
00:09:19.17 |
+00:41:12.4 |
HIP 717 |
6.74 |
| 2026-05-21 00:00 |
00:09:27.06 |
+00:42:11.3 |
HIP 717 |
8.73 |
| 2026-05-21 12:00 |
00:09:34.89 |
+00:43:09.8 |
HIP 717 |
10.78 |
| 2026-05-22 00:00 |
00:09:42.65 |
+00:44:07.9 |
HIP 717 |
12.86 |
| 2026-05-22 12:00 |
00:09:50.35 |
+00:45:05.6 |
HIP 717 |
14.95 |
| 2026-05-23 00:00 |
00:09:57.98 |
+00:46:02.8 |
HIP 717 |
17.04 |
| 2026-05-23 12:00 |
00:10:05.54 |
+00:46:59.6 |
HIP 717 |
19.12 |
| 2026-05-24 00:00 |
00:10:13.03 |
+00:47:55.9 |
HIP 717 |
21.18 |
| 2026-05-24 12:00 |
00:10:20.46 |
+00:48:51.9 |
HIP 717 |
23.24 |
| 2026-05-25 00:00 |
00:10:27.82 |
+00:49:47.4 |
HIP 717 |
25.27 |
| 2026-05-25 12:00 |
00:10:35.11 |
+00:50:42.4 |
HIP 717 |
27.30 |
| 2026-05-26 00:00 |
00:10:42.33 |
+00:51:37.0 |
HIP 717 |
29.31 |
| 2026-05-26 12:00 |
00:10:49.48 |
+00:52:31.2 |
HIP 769 |
30.07 |
| 2026-05-27 00:00 |
00:10:56.57 |
+00:53:24.9 |
HIP 769 |
30.67 |
| 2026-05-27 12:00 |
00:11:03.58 |
+00:54:18.2 |
HIP 769 |
31.37 |
| 2026-05-28 00:00 |
00:11:10.52 |
+00:55:11.0 |
HIP 769 |
32.17 |
| 2026-05-28 12:00 |
00:11:17.40 |
+00:56:03.4 |
HIP 769 |
33.06 |
| 2026-05-29 00:00 |
00:11:24.20 |
+00:56:55.3 |
HIP 1087 |
32.62 |
| 2026-05-29 12:00 |
00:11:30.93 |
+00:57:46.8 |
HIP 1087 |
31.15 |
| 2026-05-30 00:00 |
00:11:37.59 |
+00:58:37.8 |
HIP 1087 |
29.74 |
| 2026-05-30 12:00 |
00:11:44.17 |
+00:59:28.3 |
HIP 1087 |
28.40 |
| 2026-05-31 00:00 |
00:11:50.69 |
+01:00:18.4 |
HIP 1087 |
27.13 |
| 2026-05-31 12:00 |
00:11:57.13 |
+01:01:08.0 |
HIP 1087 |
25.95 |
| 2026-06-01 00:00 |
00:12:03.50 |
+01:01:57.1 |
HIP 1087 |
24.85 |
| 2026-06-01 12:00 |
00:12:09.79 |
+01:02:45.8 |
HIP 1087 |
23.85 |
| 2026-06-02 00:00 |
00:12:16.01 |
+01:03:34.0 |
HIP 1087 |
22.95 |