메타데이터
| 항목 |
값 |
| Designation |
C/1961 O1 (Wilson-Hubbard) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1961-07-17T11:55:51.530880Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:14Z |
| Obs used |
8 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1961-09-23.0000000 |
| e |
0.99991912 |
| q (au) |
0.040125 |
| a (au) |
496.136062 |
| i (deg) |
24.212158 |
| Ω (om, deg) |
298.943557 |
| ω (w, deg) |
270.697744 |
| M (ma, deg) |
0.006020 |
밝기
산란 + 전체 선형
$$
M_a = (9.581 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.581 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
1.000 |
| 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 |
00:59:35.38 |
+32:26:39.9 |
HIP 4612 |
6.12 |
| 2026-03-26 12:00 |
00:59:36.82 |
+32:26:44.9 |
HIP 4612 |
6.41 |
| 2026-03-27 00:00 |
00:59:38.25 |
+32:26:50.0 |
HIP 4612 |
6.70 |
| 2026-03-27 12:00 |
00:59:39.69 |
+32:26:55.2 |
HIP 4612 |
7.00 |
| 2026-03-28 00:00 |
00:59:41.14 |
+32:27:00.5 |
HIP 4612 |
7.30 |
| 2026-03-28 12:00 |
00:59:42.58 |
+32:27:05.8 |
HIP 4612 |
7.60 |
| 2026-03-29 00:00 |
00:59:44.03 |
+32:27:11.2 |
HIP 4612 |
7.90 |
| 2026-03-29 12:00 |
00:59:45.47 |
+32:27:16.7 |
HIP 4612 |
8.21 |
| 2026-03-30 00:00 |
00:59:46.92 |
+32:27:22.3 |
HIP 4612 |
8.51 |
| 2026-03-30 12:00 |
00:59:48.37 |
+32:27:28.0 |
HIP 4612 |
8.82 |
| 2026-03-31 00:00 |
00:59:49.83 |
+32:27:33.7 |
HIP 4612 |
9.13 |
| 2026-03-31 12:00 |
00:59:51.28 |
+32:27:39.5 |
HIP 4612 |
9.44 |
| 2026-04-01 00:00 |
00:59:52.73 |
+32:27:45.4 |
HIP 4612 |
9.75 |
| 2026-04-01 12:00 |
00:59:54.19 |
+32:27:51.4 |
HIP 4612 |
10.06 |
| 2026-04-02 00:00 |
00:59:55.65 |
+32:27:57.5 |
HIP 4612 |
10.37 |
| 2026-04-02 12:00 |
00:59:57.10 |
+32:28:03.6 |
HIP 4612 |
10.68 |
| 2026-04-03 00:00 |
00:59:58.56 |
+32:28:09.9 |
HIP 4612 |
11.00 |
| 2026-04-03 12:00 |
01:00:00.02 |
+32:28:16.1 |
HIP 4612 |
11.31 |
| 2026-04-04 00:00 |
01:00:01.48 |
+32:28:22.5 |
HIP 4612 |
11.63 |
| 2026-04-04 12:00 |
01:00:02.94 |
+32:28:29.0 |
HIP 4612 |
11.94 |
| 2026-04-05 00:00 |
01:00:04.40 |
+32:28:35.5 |
HIP 4612 |
12.26 |
| 2026-04-05 12:00 |
01:00:05.86 |
+32:28:42.1 |
HIP 4612 |
12.58 |
| 2026-04-06 00:00 |
01:00:07.32 |
+32:28:48.8 |
HIP 4612 |
12.90 |
| 2026-04-06 12:00 |
01:00:08.78 |
+32:28:55.5 |
HIP 4612 |
13.22 |
| 2026-04-07 00:00 |
01:00:10.24 |
+32:29:02.3 |
HIP 4612 |
13.54 |
| 2026-04-07 12:00 |
01:00:11.71 |
+32:29:09.2 |
HIP 4612 |
13.86 |
| 2026-04-08 00:00 |
01:00:13.17 |
+32:29:16.2 |
HIP 4612 |
14.18 |
| 2026-04-08 12:00 |
01:00:14.63 |
+32:29:23.2 |
HIP 4612 |
14.50 |
| 2026-04-09 00:00 |
01:00:16.09 |
+32:29:30.4 |
HIP 4612 |
14.82 |
| 2026-04-09 12:00 |
01:00:17.55 |
+32:29:37.5 |
HIP 4612 |
15.14 |
| 2026-04-10 00:00 |
01:00:19.01 |
+32:29:44.8 |
HIP 4612 |
15.46 |
| 2026-04-10 12:00 |
01:00:20.46 |
+32:29:52.1 |
HIP 4612 |
15.79 |
| 2026-04-11 00:00 |
01:00:21.92 |
+32:29:59.5 |
HIP 4612 |
16.11 |
| 2026-04-11 12:00 |
01:00:23.38 |
+32:30:07.0 |
HIP 4612 |
16.43 |
| 2026-04-12 00:00 |
01:00:24.83 |
+32:30:14.5 |
HIP 4612 |
16.76 |
| 2026-04-12 12:00 |
01:00:26.29 |
+32:30:22.1 |
HIP 4612 |
17.08 |
| 2026-04-13 00:00 |
01:00:27.74 |
+32:30:29.8 |
HIP 4612 |
17.41 |
| 2026-04-13 12:00 |
01:00:29.19 |
+32:30:37.5 |
HIP 4612 |
17.73 |
| 2026-04-14 00:00 |
01:00:30.65 |
+32:30:45.4 |
HIP 4612 |
18.06 |
| 2026-04-14 12:00 |
01:00:32.09 |
+32:30:53.2 |
HIP 4612 |
18.38 |
| 2026-04-15 00:00 |
01:00:33.54 |
+32:31:01.2 |
HIP 4612 |
18.71 |
| 2026-04-15 12:00 |
01:00:34.99 |
+32:31:09.2 |
HIP 4612 |
19.03 |
| 2026-04-16 00:00 |
01:00:36.43 |
+32:31:17.2 |
HIP 4612 |
19.36 |