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 |
9.999 |
| 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) |
| 2026-06-01 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 |
| 2026-06-02 12:00 |
04:50:24.64 |
+50:48:34.0 |
HIP 22637 |
17.10 |
| 2026-06-03 00:00 |
04:50:29.35 |
+50:48:36.8 |
HIP 22637 |
16.36 |
| 2026-06-03 12:00 |
04:50:34.06 |
+50:48:39.7 |
HIP 22637 |
15.61 |
| 2026-06-04 00:00 |
04:50:38.77 |
+50:48:42.8 |
HIP 22637 |
14.87 |
| 2026-06-04 12:00 |
04:50:43.48 |
+50:48:46.0 |
HIP 22637 |
14.12 |
| 2026-06-05 00:00 |
04:50:48.20 |
+50:48:49.3 |
HIP 22637 |
13.38 |
| 2026-06-05 12:00 |
04:50:52.91 |
+50:48:52.9 |
HIP 22637 |
12.63 |
| 2026-06-06 00:00 |
04:50:57.62 |
+50:48:56.5 |
HIP 22637 |
11.89 |
| 2026-06-06 12:00 |
04:51:02.33 |
+50:49:00.4 |
HIP 22637 |
11.14 |
| 2026-06-07 00:00 |
04:51:07.04 |
+50:49:04.4 |
HIP 22637 |
10.40 |
| 2026-06-07 12:00 |
04:51:11.74 |
+50:49:08.5 |
HIP 22637 |
9.65 |
| 2026-06-08 00:00 |
04:51:16.45 |
+50:49:12.8 |
HIP 22637 |
8.91 |
| 2026-06-08 12:00 |
04:51:21.16 |
+50:49:17.2 |
HIP 22637 |
8.17 |
| 2026-06-09 00:00 |
04:51:25.86 |
+50:49:21.8 |
HIP 22637 |
7.43 |
| 2026-06-09 12:00 |
04:51:30.56 |
+50:49:26.6 |
HIP 22637 |
6.69 |
| 2026-06-10 00:00 |
04:51:35.26 |
+50:49:31.5 |
HIP 22637 |
5.95 |
| 2026-06-10 12:00 |
04:51:39.95 |
+50:49:36.5 |
HIP 22637 |
5.21 |
| 2026-06-11 00:00 |
04:51:44.64 |
+50:49:41.7 |
HIP 22637 |
4.48 |
| 2026-06-11 12:00 |
04:51:49.33 |
+50:49:47.1 |
HIP 22637 |
3.76 |
| 2026-06-12 00:00 |
04:51:54.02 |
+50:49:52.6 |
HIP 22637 |
3.05 |
| 2026-06-12 12:00 |
04:51:58.70 |
+50:49:58.2 |
HIP 22637 |
2.37 |
| 2026-06-13 00:00 |
04:52:03.38 |
+50:50:04.0 |
HIP 22637 |
1.74 |
| 2026-06-13 12:00 |
04:52:08.05 |
+50:50:09.9 |
HIP 22637 |
1.24 |
| 2026-06-14 00:00 |
04:52:12.72 |
+50:50:16.0 |
HIP 22637 |
1.08 |
| 2026-06-14 12:00 |
04:52:17.38 |
+50:50:22.3 |
HIP 22637 |
1.38 |
| 2026-06-15 00:00 |
04:52:22.03 |
+50:50:28.7 |
HIP 22637 |
1.94 |
| 2026-06-15 12:00 |
04:52:26.69 |
+50:50:35.2 |
HIP 22637 |
2.59 |
| 2026-06-16 00:00 |
04:52:31.33 |
+50:50:41.9 |
HIP 22637 |
3.29 |
| 2026-06-16 12:00 |
04:52:35.97 |
+50:50:48.7 |
HIP 22659 |
3.80 |
| 2026-06-17 00:00 |
04:52:40.60 |
+50:50:55.7 |
HIP 22659 |
4.26 |
| 2026-06-17 12:00 |
04:52:45.23 |
+50:51:02.8 |
HIP 22659 |
4.79 |
| 2026-06-18 00:00 |
04:52:49.85 |
+50:51:10.1 |
HIP 22659 |
5.37 |
| 2026-06-18 12:00 |
04:52:54.46 |
+50:51:17.5 |
HIP 22659 |
5.99 |
| 2026-06-19 00:00 |
04:52:59.06 |
+50:51:25.1 |
HIP 22659 |
6.63 |
| 2026-06-19 12:00 |
04:53:03.66 |
+50:51:32.7 |
HIP 22659 |
7.29 |
| 2026-06-20 00:00 |
04:53:08.24 |
+50:51:40.6 |
HIP 22659 |
7.97 |
| 2026-06-20 12:00 |
04:53:12.82 |
+50:51:48.6 |
HIP 22659 |
8.65 |
| 2026-06-21 00:00 |
04:53:17.39 |
+50:51:56.7 |
HIP 22659 |
9.34 |
| 2026-06-21 12:00 |
04:53:21.95 |
+50:52:04.9 |
HIP 22659 |
10.04 |
| 2026-06-22 00:00 |
04:53:26.50 |
+50:52:13.3 |
HIP 22659 |
10.74 |