메타데이터
| 항목 |
값 |
| Designation |
C/2002 P1 (NEAT) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2001-11-23T03:57:52.277760Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:18Z |
| Obs used |
99 |
| NEO |
- |
| M1 |
11.200 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2002-10-24.0000000 |
| e |
0.98421998 |
| q (au) |
6.530244 |
| a (au) |
413.829798 |
| i (deg) |
34.606111 |
| Ω (om, deg) |
310.672601 |
| ω (w, deg) |
347.764743 |
| M (ma, deg) |
0.039201 |
밝기
산란 + 전체 선형
$$
M_a = (14.523 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.523 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.776 |
| k |
0.800 |
| δ90 |
9.989 |
| 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 |
04:47:06.74 |
+50:49:05.9 |
HIP 22294 |
11.02 |
| 2026-05-12 12:00 |
04:47:11.15 |
+50:49:01.7 |
HIP 22294 |
10.41 |
| 2026-05-13 00:00 |
04:47:15.58 |
+50:48:57.8 |
HIP 22294 |
9.81 |
| 2026-05-13 12:00 |
04:47:20.03 |
+50:48:54.0 |
HIP 22294 |
9.23 |
| 2026-05-14 00:00 |
04:47:24.48 |
+50:48:50.3 |
HIP 22294 |
8.67 |
| 2026-05-14 12:00 |
04:47:28.95 |
+50:48:46.8 |
HIP 22294 |
8.13 |
| 2026-05-15 00:00 |
04:47:33.42 |
+50:48:43.5 |
HIP 22294 |
7.62 |
| 2026-05-15 12:00 |
04:47:37.91 |
+50:48:40.4 |
HIP 22294 |
7.14 |
| 2026-05-16 00:00 |
04:47:42.41 |
+50:48:37.4 |
HIP 22294 |
6.71 |
| 2026-05-16 12:00 |
04:47:46.93 |
+50:48:34.5 |
HIP 22294 |
6.33 |
| 2026-05-17 00:00 |
04:47:51.45 |
+50:48:31.9 |
HIP 22294 |
6.01 |
| 2026-05-17 12:00 |
04:47:55.98 |
+50:48:29.4 |
HIP 22294 |
5.77 |
| 2026-05-18 00:00 |
04:48:00.52 |
+50:48:27.0 |
HIP 22294 |
5.62 |
| 2026-05-18 12:00 |
04:48:05.07 |
+50:48:24.8 |
HIP 22294 |
5.55 |
| 2026-05-19 00:00 |
04:48:09.63 |
+50:48:22.8 |
HIP 22294 |
5.58 |
| 2026-05-19 12:00 |
04:48:14.20 |
+50:48:21.0 |
HIP 22294 |
5.71 |
| 2026-05-20 00:00 |
04:48:18.78 |
+50:48:19.3 |
HIP 22294 |
5.93 |
| 2026-05-20 12:00 |
04:48:23.37 |
+50:48:17.8 |
HIP 22294 |
6.22 |
| 2026-05-21 00:00 |
04:48:27.96 |
+50:48:16.4 |
HIP 22294 |
6.59 |
| 2026-05-21 12:00 |
04:48:32.57 |
+50:48:15.2 |
HIP 22294 |
7.01 |
| 2026-05-22 00:00 |
04:48:37.18 |
+50:48:14.1 |
HIP 22294 |
7.49 |
| 2026-05-22 12:00 |
04:48:41.79 |
+50:48:13.2 |
HIP 22294 |
8.01 |
| 2026-05-23 00:00 |
04:48:46.42 |
+50:48:12.5 |
HIP 22294 |
8.56 |
| 2026-05-23 12:00 |
04:48:51.05 |
+50:48:12.0 |
HIP 22294 |
9.13 |
| 2026-05-24 00:00 |
04:48:55.68 |
+50:48:11.6 |
HIP 22294 |
9.73 |
| 2026-05-24 12:00 |
04:49:00.33 |
+50:48:11.3 |
HIP 22294 |
10.35 |
| 2026-05-25 00:00 |
04:49:04.98 |
+50:48:11.2 |
HIP 22294 |
10.99 |
| 2026-05-25 12:00 |
04:49:09.63 |
+50:48:11.3 |
HIP 22294 |
11.64 |
| 2026-05-26 00:00 |
04:49:14.29 |
+50:48:11.5 |
HIP 22335 |
12.17 |
| 2026-05-26 12:00 |
04:49:18.96 |
+50:48:11.9 |
HIP 22335 |
12.56 |
| 2026-05-27 00:00 |
04:49:23.63 |
+50:48:12.5 |
HIP 22335 |
12.99 |
| 2026-05-27 12:00 |
04:49:28.30 |
+50:48:13.2 |
HIP 22335 |
13.44 |
| 2026-05-28 00:00 |
04:49:32.98 |
+50:48:14.1 |
HIP 22335 |
13.92 |
| 2026-05-28 12:00 |
04:49:37.66 |
+50:48:15.1 |
HIP 22335 |
14.42 |
| 2026-05-29 00:00 |
04:49:42.35 |
+50:48:16.3 |
HIP 22335 |
14.95 |
| 2026-05-29 12:00 |
04:49:47.04 |
+50:48:17.6 |
HIP 22335 |
15.49 |
| 2026-05-30 00:00 |
04:49:51.73 |
+50:48:19.1 |
HIP 22335 |
16.06 |
| 2026-05-30 12:00 |
04:49:56.42 |
+50:48:20.8 |
HIP 22335 |
16.64 |
| 2026-05-31 00:00 |
04:50:01.12 |
+50:48:22.6 |
HIP 22335 |
17.23 |
| 2026-05-31 12:00 |
04:50:05.82 |
+50:48:24.6 |
HIP 22335 |
17.84 |
| 2026-06-01 00:00 |
04:50:10.53 |
+50:48:26.7 |
HIP 22335 |
18.46 |
| 2026-06-01 12:00 |
04:50:15.23 |
+50:48:29.0 |
HIP 22637 |
18.59 |
| 2026-06-02 00:00 |
04:50:19.94 |
+50:48:31.4 |
HIP 22637 |
17.85 |