메타데이터
| 항목 |
값 |
| Designation |
C/1968 H1 (Tago-Honda-Yamamoto) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1968-05-16T06:29:47.762880Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:17Z |
| Obs used |
35 |
| NEO |
- |
| M1 |
9.800 |
| K1 |
10.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1968-05-17.0000000 |
| e |
0.99621615 |
| q (au) |
0.680377 |
| a (au) |
179.810794 |
| i (deg) |
102.170261 |
| Ω (om, deg) |
233.108209 |
| ω (w, deg) |
50.446716 |
| M (ma, deg) |
0.000298 |
밝기
산란 + 전체 선형
$$
M_a = (10.114 + 2.389\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.114 |
| n |
2.389 |
| gf |
0.800 |
| gb |
-1.000 |
| k |
0.800 |
| δ90 |
1.000 |
| 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) |
| 2026-06-01 00:00 |
03:30:33.25 |
-21:55:00.9 |
HIP 16324 |
8.08 |
| 2026-06-01 12:00 |
03:30:34.72 |
-21:55:01.0 |
HIP 16324 |
8.16 |
| 2026-06-02 00:00 |
03:30:36.19 |
-21:55:01.4 |
HIP 16324 |
8.25 |
| 2026-06-02 12:00 |
03:30:37.65 |
-21:55:01.8 |
HIP 16324 |
8.34 |
| 2026-06-03 00:00 |
03:30:39.11 |
-21:55:02.3 |
HIP 16324 |
8.45 |
| 2026-06-03 12:00 |
03:30:40.57 |
-21:55:03.0 |
HIP 16324 |
8.57 |
| 2026-06-04 00:00 |
03:30:42.02 |
-21:55:03.8 |
HIP 16324 |
8.70 |
| 2026-06-04 12:00 |
03:30:43.47 |
-21:55:04.8 |
HIP 16324 |
8.83 |
| 2026-06-05 00:00 |
03:30:44.91 |
-21:55:05.8 |
HIP 16324 |
8.98 |
| 2026-06-05 12:00 |
03:30:46.35 |
-21:55:07.0 |
HIP 16324 |
9.13 |
| 2026-06-06 00:00 |
03:30:47.78 |
-21:55:08.3 |
HIP 16324 |
9.29 |
| 2026-06-06 12:00 |
03:30:49.22 |
-21:55:09.7 |
HIP 16324 |
9.45 |
| 2026-06-07 00:00 |
03:30:50.64 |
-21:55:11.3 |
HIP 16324 |
9.63 |
| 2026-06-07 12:00 |
03:30:52.06 |
-21:55:12.9 |
HIP 16324 |
9.80 |
| 2026-06-08 00:00 |
03:30:53.48 |
-21:55:14.7 |
HIP 16324 |
9.99 |
| 2026-06-08 12:00 |
03:30:54.90 |
-21:55:16.7 |
HIP 16324 |
10.18 |
| 2026-06-09 00:00 |
03:30:56.30 |
-21:55:18.7 |
HIP 16324 |
10.37 |
| 2026-06-09 12:00 |
03:30:57.71 |
-21:55:20.9 |
HIP 16324 |
10.57 |
| 2026-06-10 00:00 |
03:30:59.11 |
-21:55:23.2 |
HIP 16324 |
10.77 |
| 2026-06-10 12:00 |
03:31:00.50 |
-21:55:25.6 |
HIP 16324 |
10.98 |
| 2026-06-11 00:00 |
03:31:01.89 |
-21:55:28.1 |
HIP 16324 |
11.19 |
| 2026-06-11 12:00 |
03:31:03.27 |
-21:55:30.8 |
HIP 16324 |
11.40 |
| 2026-06-12 00:00 |
03:31:04.65 |
-21:55:33.6 |
HIP 16324 |
11.61 |
| 2026-06-12 12:00 |
03:31:06.02 |
-21:55:36.5 |
HIP 16324 |
11.83 |
| 2026-06-13 00:00 |
03:31:07.39 |
-21:55:39.5 |
HIP 16324 |
12.05 |
| 2026-06-13 12:00 |
03:31:08.75 |
-21:55:42.7 |
HIP 16324 |
12.27 |
| 2026-06-14 00:00 |
03:31:10.11 |
-21:55:46.0 |
HIP 16324 |
12.50 |
| 2026-06-14 12:00 |
03:31:11.46 |
-21:55:49.4 |
HIP 16324 |
12.72 |
| 2026-06-15 00:00 |
03:31:12.80 |
-21:55:52.9 |
HIP 16324 |
12.95 |
| 2026-06-15 12:00 |
03:31:14.14 |
-21:55:56.6 |
HIP 16324 |
13.18 |
| 2026-06-16 00:00 |
03:31:15.47 |
-21:56:00.4 |
HIP 16324 |
13.41 |
| 2026-06-16 12:00 |
03:31:16.80 |
-21:56:04.3 |
HIP 16324 |
13.64 |
| 2026-06-17 00:00 |
03:31:18.12 |
-21:56:08.3 |
HIP 16324 |
13.88 |
| 2026-06-17 12:00 |
03:31:19.43 |
-21:56:12.4 |
HIP 16324 |
14.11 |
| 2026-06-18 00:00 |
03:31:20.74 |
-21:56:16.7 |
HIP 16324 |
14.34 |
| 2026-06-18 12:00 |
03:31:22.04 |
-21:56:21.1 |
HIP 16324 |
14.58 |
| 2026-06-19 00:00 |
03:31:23.33 |
-21:56:25.6 |
HIP 16324 |
14.81 |
| 2026-06-19 12:00 |
03:31:24.62 |
-21:56:30.2 |
HIP 16324 |
15.05 |
| 2026-06-20 00:00 |
03:31:25.90 |
-21:56:35.0 |
HIP 16324 |
15.28 |
| 2026-06-20 12:00 |
03:31:27.17 |
-21:56:39.8 |
HIP 16324 |
15.52 |
| 2026-06-21 00:00 |
03:31:28.43 |
-21:56:44.8 |
HIP 16324 |
15.76 |
| 2026-06-21 12:00 |
03:31:29.69 |
-21:56:49.9 |
HIP 16324 |
15.99 |
| 2026-06-22 00:00 |
03:31:30.94 |
-21:56:55.1 |
HIP 16324 |
16.23 |