122P/de Vico
메타데이터
| 항목 |
값 |
| Designation |
122P/de Vico |
| Type |
P |
| Perihelion (tp_cal, UTC) |
1995-10-06T00:00:14.981760Z |
| Orbit solution date (soln_date, UTC) |
2001-07-02T16:09:03Z |
| Obs used |
294 |
| NEO |
Yes |
| M1 |
7.500 |
| K1 |
10.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1996-07-16.0000000 |
| e |
0.96270889 |
| q (au) |
0.659337 |
| a (au) |
17.680817 |
| i (deg) |
85.382753 |
| Ω (om, deg) |
79.624501 |
| ω (w, deg) |
12.996092 |
| M (ma, deg) |
3.765032 |
밝기
산란 + 전체 선형
$$
M_a = (8.029 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.029 |
| n |
6.000 |
| gf |
0.800 |
| gb |
-0.500 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 1995-09-18 |
1995-10-05 |
+0.7319 |
+0.214 |
| 1995-10-06 |
1995-11-29 |
-3.8392 |
-0.486 |
| 1995-11-29 |
1995-12-25 |
+9.5514 |
-1.764 |
| 1995-12-25 |
1996-01-26 |
-4.5214 |
+1.127 |
| 1996-01-26 |
1996-05-03 |
+25.9980 |
-8.554 |
| 1996-05-03 |
1996-06-25 |
-24.9173 |
+17.533 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
17:21:19.60 |
-33:38:29.9 |
HIP 84966 |
15.82 |
| 2026-02-03 12:00 |
17:21:22.14 |
-33:38:41.3 |
HIP 84966 |
15.72 |
| 2026-02-04 00:00 |
17:21:24.65 |
-33:38:52.6 |
HIP 84966 |
15.65 |
| 2026-02-04 12:00 |
17:21:27.13 |
-33:39:04.1 |
HIP 84966 |
15.60 |
| 2026-02-05 00:00 |
17:21:29.59 |
-33:39:15.5 |
HIP 84966 |
15.57 |
| 2026-02-05 12:00 |
17:21:32.01 |
-33:39:27.0 |
HIP 84966 |
15.56 |
| 2026-02-06 00:00 |
17:21:34.41 |
-33:39:38.5 |
HIP 84966 |
15.57 |
| 2026-02-06 12:00 |
17:21:36.78 |
-33:39:50.0 |
HIP 84966 |
15.61 |
| 2026-02-07 00:00 |
17:21:39.12 |
-33:40:01.5 |
HIP 84966 |
15.66 |
| 2026-02-07 12:00 |
17:21:41.43 |
-33:40:13.1 |
HIP 84966 |
15.74 |
| 2026-02-08 00:00 |
17:21:43.72 |
-33:40:24.6 |
HIP 84966 |
15.83 |
| 2026-02-08 12:00 |
17:21:45.97 |
-33:40:36.2 |
HIP 84966 |
15.93 |
| 2026-02-09 00:00 |
17:21:48.19 |
-33:40:47.9 |
HIP 85046 |
15.85 |
| 2026-02-09 12:00 |
17:21:50.39 |
-33:40:59.5 |
HIP 85046 |
15.36 |
| 2026-02-10 00:00 |
17:21:52.55 |
-33:41:11.2 |
HIP 85046 |
14.87 |
| 2026-02-10 12:00 |
17:21:54.68 |
-33:41:22.9 |
HIP 85046 |
14.39 |
| 2026-02-11 00:00 |
17:21:56.78 |
-33:41:34.6 |
HIP 85046 |
13.92 |
| 2026-02-11 12:00 |
17:21:58.85 |
-33:41:46.3 |
HIP 85046 |
13.45 |
| 2026-02-12 00:00 |
17:22:00.89 |
-33:41:58.0 |
HIP 85046 |
12.99 |
| 2026-02-12 12:00 |
17:22:02.90 |
-33:42:09.8 |
HIP 85046 |
12.53 |
| 2026-02-13 00:00 |
17:22:04.88 |
-33:42:21.6 |
HIP 85046 |
12.08 |
| 2026-02-13 12:00 |
17:22:06.83 |
-33:42:33.3 |
HIP 85046 |
11.63 |
| 2026-02-14 00:00 |
17:22:08.74 |
-33:42:45.1 |
HIP 85046 |
11.19 |
| 2026-02-14 12:00 |
17:22:10.63 |
-33:42:57.0 |
HIP 85046 |
10.76 |
| 2026-02-15 00:00 |
17:22:12.48 |
-33:43:08.8 |
HIP 85046 |
10.33 |
| 2026-02-15 12:00 |
17:22:14.30 |
-33:43:20.6 |
HIP 85046 |
9.91 |
| 2026-02-16 00:00 |
17:22:16.09 |
-33:43:32.5 |
HIP 85046 |
9.49 |
| 2026-02-16 12:00 |
17:22:17.84 |
-33:43:44.4 |
HIP 85046 |
9.08 |
| 2026-02-17 00:00 |
17:22:19.56 |
-33:43:56.2 |
HIP 85046 |
8.67 |
| 2026-02-17 12:00 |
17:22:21.25 |
-33:44:08.1 |
HIP 85046 |
8.27 |
| 2026-02-18 00:00 |
17:22:22.91 |
-33:44:20.0 |
HIP 85046 |
7.88 |
| 2026-02-18 12:00 |
17:22:24.53 |
-33:44:31.9 |
HIP 85046 |
7.49 |
| 2026-02-19 00:00 |
17:22:26.12 |
-33:44:43.8 |
HIP 85046 |
7.11 |
| 2026-02-19 12:00 |
17:22:27.68 |
-33:44:55.8 |
HIP 85046 |
6.73 |
| 2026-02-20 00:00 |
17:22:29.20 |
-33:45:07.7 |
HIP 85046 |
6.36 |
| 2026-02-20 12:00 |
17:22:30.69 |
-33:45:19.6 |
HIP 85046 |
5.99 |
| 2026-02-21 00:00 |
17:22:32.15 |
-33:45:31.6 |
HIP 85046 |
5.63 |
| 2026-02-21 12:00 |
17:22:33.57 |
-33:45:43.5 |
HIP 85046 |
5.27 |
| 2026-02-22 00:00 |
17:22:34.96 |
-33:45:55.4 |
HIP 85046 |
4.92 |
| 2026-02-22 12:00 |
17:22:36.31 |
-33:46:07.4 |
HIP 85046 |
4.58 |
| 2026-02-23 00:00 |
17:22:37.63 |
-33:46:19.4 |
HIP 85046 |
4.24 |
| 2026-02-23 12:00 |
17:22:38.92 |
-33:46:31.3 |
HIP 85046 |
3.91 |
| 2026-02-24 00:00 |
17:22:40.17 |
-33:46:43.3 |
HIP 85046 |
3.58 |