메타데이터
| 항목 |
값 |
| Designation |
C/1974 V1 (van den Bergh) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1974-08-08T03:12:11.047680Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:22Z |
| Obs used |
40 |
| NEO |
- |
| M1 |
6.000 |
| K1 |
10.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1975-03-15.0000000 |
| e |
1.00366502 |
| q (au) |
6.019170 |
| a (au) |
-1642.329256 |
| i (deg) |
60.856171 |
| Ω (om, deg) |
226.103510 |
| ω (w, deg) |
151.794940 |
| M (ma, deg) |
0.003241 |
밝기
산란 + 전체 선형
$$
M_a = (9.663 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.663 |
| n |
2.000 |
| gf |
0.997 |
| gb |
-0.963 |
| k |
1.000 |
| δ90 |
9.952 |
| 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 |
10:26:24.77 |
-46:07:21.0 |
HIP 51276 |
33.49 |
| 2026-06-01 12:00 |
10:26:25.09 |
-46:07:01.3 |
HIP 51078 |
33.35 |
| 2026-06-02 00:00 |
10:26:25.42 |
-46:06:41.7 |
HIP 51078 |
33.03 |
| 2026-06-02 12:00 |
10:26:25.77 |
-46:06:22.2 |
HIP 51078 |
32.71 |
| 2026-06-03 00:00 |
10:26:26.13 |
-46:06:02.7 |
HIP 51078 |
32.39 |
| 2026-06-03 12:00 |
10:26:26.52 |
-46:05:43.3 |
HIP 51078 |
32.08 |
| 2026-06-04 00:00 |
10:26:26.92 |
-46:05:24.0 |
HIP 51078 |
31.76 |
| 2026-06-04 12:00 |
10:26:27.35 |
-46:05:04.7 |
HIP 51078 |
31.45 |
| 2026-06-05 00:00 |
10:26:27.79 |
-46:04:45.5 |
HIP 51078 |
31.14 |
| 2026-06-05 12:00 |
10:26:28.24 |
-46:04:26.4 |
HIP 51078 |
30.83 |
| 2026-06-06 00:00 |
10:26:28.72 |
-46:04:07.3 |
HIP 51078 |
30.52 |
| 2026-06-06 12:00 |
10:26:29.21 |
-46:03:48.3 |
HIP 51078 |
30.21 |
| 2026-06-07 00:00 |
10:26:29.72 |
-46:03:29.4 |
HIP 51078 |
29.91 |
| 2026-06-07 12:00 |
10:26:30.25 |
-46:03:10.6 |
HIP 51078 |
29.61 |
| 2026-06-08 00:00 |
10:26:30.80 |
-46:02:51.8 |
HIP 51078 |
29.31 |
| 2026-06-08 12:00 |
10:26:31.37 |
-46:02:33.1 |
HIP 51078 |
29.01 |
| 2026-06-09 00:00 |
10:26:31.95 |
-46:02:14.5 |
HIP 51078 |
28.72 |
| 2026-06-09 12:00 |
10:26:32.55 |
-46:01:56.0 |
HIP 51078 |
28.43 |
| 2026-06-10 00:00 |
10:26:33.17 |
-46:01:37.6 |
HIP 51078 |
28.14 |
| 2026-06-10 12:00 |
10:26:33.80 |
-46:01:19.3 |
HIP 51078 |
27.85 |
| 2026-06-11 00:00 |
10:26:34.45 |
-46:01:01.0 |
HIP 51078 |
27.56 |
| 2026-06-11 12:00 |
10:26:35.13 |
-46:00:42.8 |
HIP 51078 |
27.28 |
| 2026-06-12 00:00 |
10:26:35.81 |
-46:00:24.7 |
HIP 51078 |
27.00 |
| 2026-06-12 12:00 |
10:26:36.52 |
-46:00:06.7 |
HIP 51078 |
26.73 |
| 2026-06-13 00:00 |
10:26:37.24 |
-45:59:48.8 |
HIP 51078 |
26.46 |
| 2026-06-13 12:00 |
10:26:37.98 |
-45:59:31.0 |
HIP 51078 |
26.19 |
| 2026-06-14 00:00 |
10:26:38.74 |
-45:59:13.3 |
HIP 51078 |
25.92 |
| 2026-06-14 12:00 |
10:26:39.52 |
-45:58:55.7 |
HIP 51078 |
25.66 |
| 2026-06-15 00:00 |
10:26:40.31 |
-45:58:38.2 |
HIP 51078 |
25.40 |
| 2026-06-15 12:00 |
10:26:41.12 |
-45:58:20.7 |
HIP 51078 |
25.15 |
| 2026-06-16 00:00 |
10:26:41.94 |
-45:58:03.4 |
HIP 51078 |
24.90 |
| 2026-06-16 12:00 |
10:26:42.79 |
-45:57:46.2 |
HIP 51078 |
24.65 |
| 2026-06-17 00:00 |
10:26:43.65 |
-45:57:29.0 |
HIP 51078 |
24.41 |
| 2026-06-17 12:00 |
10:26:44.53 |
-45:57:12.0 |
HIP 51078 |
24.17 |
| 2026-06-18 00:00 |
10:26:45.42 |
-45:56:55.1 |
HIP 51078 |
23.93 |
| 2026-06-18 12:00 |
10:26:46.33 |
-45:56:38.3 |
HIP 51078 |
23.70 |
| 2026-06-19 00:00 |
10:26:47.26 |
-45:56:21.6 |
HIP 51078 |
23.48 |
| 2026-06-19 12:00 |
10:26:48.20 |
-45:56:05.0 |
HIP 51078 |
23.26 |
| 2026-06-20 00:00 |
10:26:49.16 |
-45:55:48.5 |
HIP 51078 |
23.04 |
| 2026-06-20 12:00 |
10:26:50.14 |
-45:55:32.1 |
HIP 51078 |
22.83 |
| 2026-06-21 00:00 |
10:26:51.13 |
-45:55:15.8 |
HIP 51078 |
22.63 |
| 2026-06-21 12:00 |
10:26:52.14 |
-45:54:59.7 |
HIP 51078 |
22.43 |
| 2026-06-22 00:00 |
10:26:53.17 |
-45:54:43.6 |
HIP 51078 |
22.23 |