메타데이터
| 항목 |
값 |
| Designation |
C/2003 H3 (NEAT) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2003-04-24T05:32:24.740160Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:29Z |
| Obs used |
765 |
| NEO |
- |
| M1 |
11.800 |
| K1 |
5.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2003-08-01.0000000 |
| e |
0.99978175 |
| q (au) |
2.901439 |
| a (au) |
13294.090063 |
| i (deg) |
42.811675 |
| Ω (om, deg) |
269.417235 |
| ω (w, deg) |
6.477416 |
| M (ma, deg) |
0.000064 |
밝기
산란 + 전체 선형
$$
M_a = (13.461 + 2.567\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.461 |
| n |
2.567 |
| gf |
1.000 |
| gb |
-0.709 |
| 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 |
04:27:22.59 |
+37:25:03.5 |
HIP 20788 |
10.37 |
| 2026-05-12 12:00 |
04:27:25.92 |
+37:25:04.8 |
HIP 20788 |
10.48 |
| 2026-05-13 00:00 |
04:27:29.26 |
+37:25:06.1 |
HIP 20788 |
10.64 |
| 2026-05-13 12:00 |
04:27:32.60 |
+37:25:07.6 |
HIP 20788 |
10.83 |
| 2026-05-14 00:00 |
04:27:35.95 |
+37:25:09.1 |
HIP 20788 |
11.07 |
| 2026-05-14 12:00 |
04:27:39.32 |
+37:25:10.7 |
HIP 20788 |
11.34 |
| 2026-05-15 00:00 |
04:27:42.68 |
+37:25:12.5 |
HIP 20788 |
11.64 |
| 2026-05-15 12:00 |
04:27:46.06 |
+37:25:14.3 |
HIP 20788 |
11.98 |
| 2026-05-16 00:00 |
04:27:49.44 |
+37:25:16.2 |
HIP 20788 |
12.34 |
| 2026-05-16 12:00 |
04:27:52.83 |
+37:25:18.3 |
HIP 20788 |
12.73 |
| 2026-05-17 00:00 |
04:27:56.22 |
+37:25:20.4 |
HIP 20788 |
13.15 |
| 2026-05-17 12:00 |
04:27:59.62 |
+37:25:22.6 |
HIP 20788 |
13.59 |
| 2026-05-18 00:00 |
04:28:03.02 |
+37:25:24.9 |
HIP 20788 |
14.05 |
| 2026-05-18 12:00 |
04:28:06.43 |
+37:25:27.3 |
HIP 20788 |
14.53 |
| 2026-05-19 00:00 |
04:28:09.85 |
+37:25:29.8 |
HIP 20788 |
15.03 |
| 2026-05-19 12:00 |
04:28:13.27 |
+37:25:32.4 |
HIP 20788 |
15.54 |
| 2026-05-20 00:00 |
04:28:16.69 |
+37:25:35.1 |
HIP 20788 |
16.07 |
| 2026-05-20 12:00 |
04:28:20.12 |
+37:25:37.9 |
HIP 20788 |
16.61 |
| 2026-05-21 00:00 |
04:28:23.55 |
+37:25:40.7 |
HIP 20788 |
17.16 |
| 2026-05-21 12:00 |
04:28:26.99 |
+37:25:43.7 |
HIP 20788 |
17.72 |
| 2026-05-22 00:00 |
04:28:30.43 |
+37:25:46.7 |
HIP 20788 |
18.30 |
| 2026-05-22 12:00 |
04:28:33.87 |
+37:25:49.9 |
HIP 20788 |
18.88 |
| 2026-05-23 00:00 |
04:28:37.32 |
+37:25:53.1 |
HIP 20788 |
19.47 |
| 2026-05-23 12:00 |
04:28:40.77 |
+37:25:56.5 |
HIP 20788 |
20.06 |
| 2026-05-24 00:00 |
04:28:44.22 |
+37:25:59.9 |
HIP 20788 |
20.67 |
| 2026-05-24 12:00 |
04:28:47.68 |
+37:26:03.4 |
HIP 20788 |
21.28 |
| 2026-05-25 00:00 |
04:28:51.13 |
+37:26:07.0 |
HIP 20788 |
21.89 |
| 2026-05-25 12:00 |
04:28:54.59 |
+37:26:10.6 |
HIP 20788 |
22.51 |
| 2026-05-26 00:00 |
04:28:58.06 |
+37:26:14.4 |
HIP 20788 |
23.14 |
| 2026-05-26 12:00 |
04:29:01.52 |
+37:26:18.3 |
HIP 20788 |
23.77 |
| 2026-05-27 00:00 |
04:29:04.98 |
+37:26:22.2 |
HIP 20788 |
24.41 |
| 2026-05-27 12:00 |
04:29:08.45 |
+37:26:26.3 |
HIP 20788 |
25.05 |
| 2026-05-28 00:00 |
04:29:11.92 |
+37:26:30.4 |
HIP 20788 |
25.69 |
| 2026-05-28 12:00 |
04:29:15.39 |
+37:26:34.6 |
HIP 20788 |
26.34 |
| 2026-05-29 00:00 |
04:29:18.86 |
+37:26:38.9 |
HIP 20788 |
26.98 |
| 2026-05-29 12:00 |
04:29:22.32 |
+37:26:43.3 |
HIP 20788 |
27.64 |
| 2026-05-30 00:00 |
04:29:25.79 |
+37:26:47.7 |
HIP 21117 |
28.17 |
| 2026-05-30 12:00 |
04:29:29.26 |
+37:26:52.3 |
HIP 21117 |
27.52 |
| 2026-05-31 00:00 |
04:29:32.73 |
+37:26:56.9 |
HIP 21117 |
26.87 |
| 2026-05-31 12:00 |
04:29:36.20 |
+37:27:01.6 |
HIP 21117 |
26.23 |
| 2026-06-01 00:00 |
04:29:39.67 |
+37:27:06.4 |
HIP 21117 |
25.58 |
| 2026-06-01 12:00 |
04:29:43.14 |
+37:27:11.3 |
HIP 21117 |
24.94 |
| 2026-06-02 00:00 |
04:29:46.61 |
+37:27:16.3 |
HIP 21117 |
24.30 |