メタデータ
| 項目 |
値 |
| 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 |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| 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 |
等級
散乱 + 全体線形
$$
M_a = (8.029 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
8.029 |
| n |
6.000 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
0.800 |
| δ90 |
1.000 |
| パラメータ |
記号 |
範囲 |
説明 |
| 太陽・地球距離が1 AUのときの絶対等級 |
H0 |
-5 to 20 |
彗星の固有の明るさ |
| 測光スロープパラメータ |
n |
2 to 6 |
太陽距離に対する明るさ変化率 |
| 前方散乱非対称係数 |
gf |
0.8 to 1 |
前方散乱の強さ |
| 後方散乱非対称係数 |
gb |
-1 to -0.5 |
後方散乱の強さ |
| 分配係数 |
k |
0.8 to 1 |
前方/後方散乱の寄与比 |
| ダスト/ガス明るさ比 |
δ90 |
1 to 10 |
ダスト散乱とガス放射の相対寄与 |
参考: EPSC-DPS2025-160
残差 (区間線形)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 開始日 (UTC) |
終了日 (UTC) |
a |
b |
| 1995-09-18 |
1995-10-05 |
+0.7319 |
+0.214 |
| 1995-10-06 |
1995-11-26 |
-3.7764 |
-0.479 |
| 1995-11-26 |
1996-01-26 |
+4.5518 |
-1.150 |
| 1996-01-26 |
1996-06-25 |
+14.1222 |
-4.275 |
log10 r = log10(太陽距離/AU)、Δ = 地球距離(AU)
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
17:08:55.47 |
-34:01:26.6 |
HIP 83861 |
11.91 |
| 2026-07-29 12:00 |
17:08:52.66 |
-34:01:17.8 |
HIP 83861 |
11.44 |
| 2026-07-30 00:00 |
17:08:49.87 |
-34:01:09.1 |
HIP 83861 |
11.00 |
| 2026-07-30 12:00 |
17:08:47.11 |
-34:01:00.2 |
HIP 83861 |
10.57 |
| 2026-07-31 00:00 |
17:08:44.38 |
-34:00:51.4 |
HIP 83861 |
10.16 |
| 2026-07-31 12:00 |
17:08:41.67 |
-34:00:42.5 |
HIP 83861 |
9.78 |
| 2026-08-01 00:00 |
17:08:38.99 |
-34:00:33.6 |
HIP 83861 |
9.41 |
| 2026-08-01 12:00 |
17:08:36.35 |
-34:00:24.7 |
HIP 83861 |
9.07 |
| 2026-08-02 00:00 |
17:08:33.73 |
-34:00:15.8 |
HIP 83861 |
8.75 |
| 2026-08-02 12:00 |
17:08:31.13 |
-34:00:06.8 |
HIP 83861 |
8.46 |
| 2026-08-03 00:00 |
17:08:28.57 |
-33:59:57.8 |
HIP 83861 |
8.19 |
| 2026-08-03 12:00 |
17:08:26.04 |
-33:59:48.8 |
HIP 83861 |
7.96 |
| 2026-08-04 00:00 |
17:08:23.54 |
-33:59:39.8 |
HIP 83861 |
7.76 |
| 2026-08-04 12:00 |
17:08:21.06 |
-33:59:30.7 |
HIP 83861 |
7.59 |
| 2026-08-05 00:00 |
17:08:18.62 |
-33:59:21.6 |
HIP 83861 |
7.45 |
| 2026-08-05 12:00 |
17:08:16.20 |
-33:59:12.5 |
HIP 83861 |
7.35 |
| 2026-08-06 00:00 |
17:08:13.82 |
-33:59:03.4 |
HIP 83861 |
7.29 |
| 2026-08-06 12:00 |
17:08:11.46 |
-33:58:54.3 |
HIP 83861 |
7.26 |
| 2026-08-07 00:00 |
17:08:09.14 |
-33:58:45.2 |
HIP 83861 |
7.26 |
| 2026-08-07 12:00 |
17:08:06.84 |
-33:58:36.0 |
HIP 83861 |
7.30 |
| 2026-08-08 00:00 |
17:08:04.58 |
-33:58:26.9 |
HIP 83861 |
7.36 |
| 2026-08-08 12:00 |
17:08:02.35 |
-33:58:17.7 |
HIP 83861 |
7.46 |
| 2026-08-09 00:00 |
17:08:00.15 |
-33:58:08.5 |
HIP 83861 |
7.58 |
| 2026-08-09 12:00 |
17:07:57.98 |
-33:57:59.3 |
HIP 83861 |
7.72 |
| 2026-08-10 00:00 |
17:07:55.84 |
-33:57:50.1 |
HIP 83861 |
7.89 |
| 2026-08-10 12:00 |
17:07:53.73 |
-33:57:40.8 |
HIP 83861 |
8.07 |
| 2026-08-11 00:00 |
17:07:51.66 |
-33:57:31.6 |
HIP 83861 |
8.28 |
| 2026-08-11 12:00 |
17:07:49.61 |
-33:57:22.4 |
HIP 83861 |
8.49 |
| 2026-08-12 00:00 |
17:07:47.60 |
-33:57:13.1 |
HIP 83861 |
8.72 |
| 2026-08-12 12:00 |
17:07:45.62 |
-33:57:03.9 |
HIP 83861 |
8.96 |
| 2026-08-13 00:00 |
17:07:43.68 |
-33:56:54.6 |
HIP 83861 |
9.21 |
| 2026-08-13 12:00 |
17:07:41.76 |
-33:56:45.4 |
HIP 83861 |
9.47 |
| 2026-08-14 00:00 |
17:07:39.88 |
-33:56:36.1 |
HIP 83861 |
9.73 |
| 2026-08-14 12:00 |
17:07:38.03 |
-33:56:26.9 |
HIP 83861 |
10.00 |
| 2026-08-15 00:00 |
17:07:36.22 |
-33:56:17.6 |
HIP 83861 |
10.27 |
| 2026-08-15 12:00 |
17:07:34.43 |
-33:56:08.4 |
HIP 83861 |
10.54 |
| 2026-08-16 00:00 |
17:07:32.69 |
-33:55:59.1 |
HIP 83861 |
10.82 |
| 2026-08-16 12:00 |
17:07:30.97 |
-33:55:49.9 |
HIP 83861 |
11.09 |
| 2026-08-17 00:00 |
17:07:29.29 |
-33:55:40.6 |
HIP 83861 |
11.37 |
| 2026-08-17 12:00 |
17:07:27.64 |
-33:55:31.4 |
HIP 83861 |
11.64 |
| 2026-08-18 00:00 |
17:07:26.02 |
-33:55:22.1 |
HIP 83861 |
11.92 |
| 2026-08-18 12:00 |
17:07:24.44 |
-33:55:12.9 |
HIP 83861 |
12.19 |
| 2026-08-19 00:00 |
17:07:22.89 |
-33:55:03.7 |
HIP 83861 |
12.46 |