메타데이터
| 항목 |
값 |
| Designation |
C/2005 O1 (NEAT) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2005-05-17T08:50:22.372800Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:51Z |
| Obs used |
90 |
| NEO |
- |
| M1 |
7.100 |
| K1 |
17.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2005-08-12.0000000 |
| e |
0.92959218 |
| q (au) |
3.590926 |
| a (au) |
51.001801 |
| i (deg) |
155.981032 |
| Ω (om, deg) |
304.799007 |
| ω (w, deg) |
324.741971 |
| M (ma, deg) |
0.234424 |
밝기
산란 + 전체 선형
$$
M_a = (11.819 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.819 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.760 |
| 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) |
| 2026-03-26 00:00 |
13:04:49.88 |
+17:12:18.5 |
HIP 63854 |
19.83 |
| 2026-03-26 12:00 |
13:04:46.38 |
+17:12:41.6 |
HIP 63854 |
20.43 |
| 2026-03-27 00:00 |
13:04:42.87 |
+17:13:04.6 |
HIP 63854 |
21.05 |
| 2026-03-27 12:00 |
13:04:39.36 |
+17:13:27.5 |
HIP 63854 |
21.69 |
| 2026-03-28 00:00 |
13:04:35.84 |
+17:13:50.2 |
HIP 63854 |
22.35 |
| 2026-03-28 12:00 |
13:04:32.32 |
+17:14:12.7 |
HIP 63854 |
23.02 |
| 2026-03-29 00:00 |
13:04:28.79 |
+17:14:35.1 |
HIP 63854 |
23.71 |
| 2026-03-29 12:00 |
13:04:25.26 |
+17:14:57.3 |
HIP 63854 |
24.41 |
| 2026-03-30 00:00 |
13:04:21.72 |
+17:15:19.4 |
HIP 63854 |
25.13 |
| 2026-03-30 12:00 |
13:04:18.18 |
+17:15:41.2 |
HIP 63854 |
25.85 |
| 2026-03-31 00:00 |
13:04:14.63 |
+17:16:03.0 |
HIP 63854 |
26.59 |
| 2026-03-31 12:00 |
13:04:11.09 |
+17:16:24.5 |
HIP 63854 |
27.34 |
| 2026-04-01 00:00 |
13:04:07.54 |
+17:16:45.9 |
HIP 63854 |
28.09 |
| 2026-04-01 12:00 |
13:04:03.98 |
+17:17:07.2 |
HIP 63854 |
28.85 |
| 2026-04-02 00:00 |
13:04:00.42 |
+17:17:28.2 |
HIP 63854 |
29.62 |
| 2026-04-02 12:00 |
13:03:56.86 |
+17:17:49.1 |
HIP 63854 |
30.39 |
| 2026-04-03 00:00 |
13:03:53.30 |
+17:18:09.8 |
HIP 63854 |
31.17 |
| 2026-04-03 12:00 |
13:03:49.74 |
+17:18:30.4 |
HIP 63854 |
31.96 |
| 2026-04-04 00:00 |
13:03:46.17 |
+17:18:50.7 |
HIP 63854 |
32.75 |
| 2026-04-04 12:00 |
13:03:42.61 |
+17:19:10.9 |
HIP 63854 |
33.55 |
| 2026-04-05 00:00 |
13:03:39.04 |
+17:19:31.0 |
HIP 63854 |
34.35 |
| 2026-04-05 12:00 |
13:03:35.47 |
+17:19:50.8 |
HIP 63854 |
35.15 |
| 2026-04-06 00:00 |
13:03:31.90 |
+17:20:10.4 |
HIP 63854 |
35.95 |
| 2026-04-06 12:00 |
13:03:28.33 |
+17:20:29.9 |
HIP 63533 |
35.62 |
| 2026-04-07 00:00 |
13:03:24.76 |
+17:20:49.2 |
HIP 63533 |
34.95 |
| 2026-04-07 12:00 |
13:03:21.19 |
+17:21:08.3 |
HIP 63533 |
34.29 |
| 2026-04-08 00:00 |
13:03:17.62 |
+17:21:27.2 |
HIP 63533 |
33.64 |
| 2026-04-08 12:00 |
13:03:14.05 |
+17:21:46.0 |
HIP 63533 |
33.00 |
| 2026-04-09 00:00 |
13:03:10.48 |
+17:22:04.5 |
HIP 63533 |
32.38 |
| 2026-04-09 12:00 |
13:03:06.91 |
+17:22:22.9 |
HIP 63533 |
31.76 |
| 2026-04-10 00:00 |
13:03:03.34 |
+17:22:41.0 |
HIP 63533 |
31.16 |
| 2026-04-10 12:00 |
13:02:59.78 |
+17:22:59.0 |
HIP 63533 |
30.57 |
| 2026-04-11 00:00 |
13:02:56.21 |
+17:23:16.8 |
HIP 63533 |
30.00 |
| 2026-04-11 12:00 |
13:02:52.65 |
+17:23:34.3 |
HIP 63533 |
29.44 |
| 2026-04-12 00:00 |
13:02:49.09 |
+17:23:51.7 |
HIP 63533 |
28.90 |
| 2026-04-12 12:00 |
13:02:45.54 |
+17:24:08.9 |
HIP 63533 |
28.38 |
| 2026-04-13 00:00 |
13:02:41.99 |
+17:24:25.9 |
HIP 63533 |
27.87 |
| 2026-04-13 12:00 |
13:02:38.44 |
+17:24:42.7 |
HIP 63533 |
27.38 |
| 2026-04-14 00:00 |
13:02:34.89 |
+17:24:59.2 |
HIP 63533 |
26.91 |
| 2026-04-14 12:00 |
13:02:31.35 |
+17:25:15.6 |
HIP 63533 |
26.46 |
| 2026-04-15 00:00 |
13:02:27.81 |
+17:25:31.8 |
HIP 63533 |
26.03 |
| 2026-04-15 12:00 |
13:02:24.28 |
+17:25:47.8 |
HIP 63533 |
25.62 |
| 2026-04-16 00:00 |
13:02:20.75 |
+17:26:03.5 |
HIP 63533 |
25.23 |