메타데이터
| 항목 |
값 |
| Designation |
P/2001 H5 (NEAT) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2001-01-28T16:49:48.224640Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:08Z |
| Obs used |
43 |
| NEO |
- |
| M1 |
7.200 |
| K1 |
24.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2001-05-03.0000000 |
| e |
0.60019118 |
| q (au) |
2.396649 |
| a (au) |
5.994487 |
| i (deg) |
8.399268 |
| Ω (om, deg) |
329.563064 |
| ω (w, deg) |
224.878306 |
| M (ma, deg) |
6.332598 |
밝기
산란 + 전체 선형
$$
M_a = (13.684 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.684 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.726 |
| k |
0.800 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
02:19:05.03 |
+21:20:01.5 |
HIP 10652 |
30.85 |
| 2026-05-12 12:00 |
02:19:20.10 |
+21:21:21.2 |
HIP 10959 |
29.45 |
| 2026-05-13 00:00 |
02:19:35.16 |
+21:22:40.9 |
HIP 10959 |
25.74 |
| 2026-05-13 12:00 |
02:19:50.20 |
+21:24:00.7 |
HIP 10959 |
22.04 |
| 2026-05-14 00:00 |
02:20:05.23 |
+21:25:20.5 |
HIP 10959 |
18.37 |
| 2026-05-14 12:00 |
02:20:20.25 |
+21:26:40.3 |
HIP 10959 |
14.74 |
| 2026-05-15 00:00 |
02:20:35.24 |
+21:28:00.1 |
HIP 10959 |
11.18 |
| 2026-05-15 12:00 |
02:20:50.23 |
+21:29:20.0 |
HIP 10959 |
7.79 |
| 2026-05-16 00:00 |
02:21:05.20 |
+21:30:39.9 |
HIP 10959 |
4.91 |
| 2026-05-16 12:00 |
02:21:20.14 |
+21:31:59.8 |
HIP 10959 |
3.92 |
| 2026-05-17 00:00 |
02:21:35.08 |
+21:33:19.7 |
HIP 10959 |
5.86 |
| 2026-05-17 12:00 |
02:21:49.99 |
+21:34:39.6 |
HIP 10959 |
8.99 |
| 2026-05-18 00:00 |
02:22:04.89 |
+21:35:59.5 |
HIP 10959 |
12.44 |
| 2026-05-18 12:00 |
02:22:19.76 |
+21:37:19.5 |
HIP 10959 |
16.00 |
| 2026-05-19 00:00 |
02:22:34.61 |
+21:38:39.4 |
HIP 10959 |
19.61 |
| 2026-05-19 12:00 |
02:22:49.45 |
+21:39:59.3 |
HIP 11076 |
21.53 |
| 2026-05-20 00:00 |
02:23:04.26 |
+21:41:19.2 |
HIP 11076 |
23.63 |
| 2026-05-20 12:00 |
02:23:19.05 |
+21:42:39.1 |
HIP 11076 |
26.09 |
| 2026-05-21 00:00 |
02:23:33.82 |
+21:43:59.0 |
HIP 11076 |
28.80 |
| 2026-05-21 12:00 |
02:23:48.56 |
+21:45:18.9 |
HIP 11315 |
25.79 |
| 2026-05-22 00:00 |
02:24:03.28 |
+21:46:38.8 |
HIP 11315 |
22.39 |
| 2026-05-22 12:00 |
02:24:17.97 |
+21:47:58.6 |
HIP 11315 |
19.10 |
| 2026-05-23 00:00 |
02:24:32.64 |
+21:49:18.4 |
HIP 11315 |
15.98 |
| 2026-05-23 12:00 |
02:24:47.28 |
+21:50:38.2 |
HIP 11315 |
13.14 |
| 2026-05-24 00:00 |
02:25:01.90 |
+21:51:58.0 |
HIP 11315 |
10.80 |
| 2026-05-24 12:00 |
02:25:16.49 |
+21:53:17.7 |
HIP 11315 |
9.35 |
| 2026-05-25 00:00 |
02:25:31.05 |
+21:54:37.4 |
HIP 11315 |
9.21 |
| 2026-05-25 12:00 |
02:25:45.59 |
+21:55:57.1 |
HIP 11315 |
10.41 |
| 2026-05-26 00:00 |
02:26:00.10 |
+21:57:16.7 |
HIP 11315 |
12.58 |
| 2026-05-26 12:00 |
02:26:14.57 |
+21:58:36.3 |
HIP 11315 |
15.30 |
| 2026-05-27 00:00 |
02:26:29.02 |
+21:59:55.9 |
HIP 11315 |
18.32 |
| 2026-05-27 12:00 |
02:26:43.44 |
+22:01:15.4 |
HIP 11315 |
21.52 |
| 2026-05-28 00:00 |
02:26:57.83 |
+22:02:34.9 |
HIP 11315 |
24.82 |
| 2026-05-28 12:00 |
02:27:12.18 |
+22:03:54.3 |
HIP 11315 |
28.19 |
| 2026-05-29 00:00 |
02:27:26.51 |
+22:05:13.6 |
HIP 11315 |
31.60 |
| 2026-05-29 12:00 |
02:27:40.80 |
+22:06:32.9 |
HIP 11315 |
35.03 |
| 2026-05-30 00:00 |
02:27:55.06 |
+22:07:52.2 |
HIP 11584 |
37.48 |
| 2026-05-30 12:00 |
02:28:09.29 |
+22:09:11.4 |
HIP 11584 |
37.10 |
| 2026-05-31 00:00 |
02:28:23.48 |
+22:10:30.5 |
HIP 11584 |
37.06 |
| 2026-05-31 12:00 |
02:28:37.64 |
+22:11:49.6 |
HIP 11584 |
37.35 |
| 2026-06-01 00:00 |
02:28:51.76 |
+22:13:08.6 |
HIP 11728 |
36.14 |
| 2026-06-01 12:00 |
02:29:05.85 |
+22:14:27.6 |
HIP 11728 |
33.31 |
| 2026-06-02 00:00 |
02:29:19.90 |
+22:15:46.5 |
HIP 11728 |
30.62 |