メタデータ
| 項目 |
値 |
| Designation |
167P/CINEOS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2001-04-09T20:35:06.921600Z |
| Orbit solution date (soln_date, UTC) |
2025-12-10T08:26:50Z |
| Obs used |
96 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2004-03-28.0000000 |
| e |
0.27000580 |
| q (au) |
11.783420 |
| a (au) |
16.141799 |
| i (deg) |
19.126732 |
| Ω (om, deg) |
295.837117 |
| ω (w, deg) |
343.646343 |
| M (ma, deg) |
16.461207 |
等級
散乱 + 全体線形
$$
M_a = (16.538 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
16.538 |
| n |
2.000 |
| gf |
0.951 |
| gb |
-0.918 |
| k |
0.800 |
| δ90 |
9.963 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
05:07:39.18 |
+34:48:14.6 |
HIP 23797 |
19.33 |
| 2026-07-29 12:00 |
05:07:45.09 |
+34:48:29.8 |
HIP 23797 |
20.23 |
| 2026-07-30 00:00 |
05:07:50.95 |
+34:48:45.0 |
HIP 23797 |
21.16 |
| 2026-07-30 12:00 |
05:07:56.78 |
+34:49:00.2 |
HIP 23998 |
19.99 |
| 2026-07-31 00:00 |
05:08:02.57 |
+34:49:15.5 |
HIP 23998 |
18.78 |
| 2026-07-31 12:00 |
05:08:08.32 |
+34:49:30.8 |
HIP 23998 |
17.58 |
| 2026-08-01 00:00 |
05:08:14.03 |
+34:49:46.2 |
HIP 23998 |
16.38 |
| 2026-08-01 12:00 |
05:08:19.70 |
+34:50:01.6 |
HIP 23998 |
15.19 |
| 2026-08-02 00:00 |
05:08:25.32 |
+34:50:17.0 |
HIP 23998 |
14.02 |
| 2026-08-02 12:00 |
05:08:30.91 |
+34:50:32.5 |
HIP 23998 |
12.85 |
| 2026-08-03 00:00 |
05:08:36.45 |
+34:50:48.0 |
HIP 23998 |
11.69 |
| 2026-08-03 12:00 |
05:08:41.95 |
+34:51:03.6 |
HIP 23998 |
10.54 |
| 2026-08-04 00:00 |
05:08:47.41 |
+34:51:19.2 |
HIP 23998 |
9.40 |
| 2026-08-04 12:00 |
05:08:52.83 |
+34:51:34.8 |
HIP 23998 |
8.27 |
| 2026-08-05 00:00 |
05:08:58.21 |
+34:51:50.5 |
HIP 23998 |
7.16 |
| 2026-08-05 12:00 |
05:09:03.54 |
+34:52:06.2 |
HIP 23998 |
6.06 |
| 2026-08-06 00:00 |
05:09:08.83 |
+34:52:21.9 |
HIP 23998 |
4.99 |
| 2026-08-06 12:00 |
05:09:14.07 |
+34:52:37.6 |
HIP 23998 |
3.95 |
| 2026-08-07 00:00 |
05:09:19.27 |
+34:52:53.4 |
HIP 23998 |
2.96 |
| 2026-08-07 12:00 |
05:09:24.42 |
+34:53:09.3 |
HIP 23998 |
2.10 |
| 2026-08-08 00:00 |
05:09:29.53 |
+34:53:25.1 |
HIP 23998 |
1.56 |
| 2026-08-08 12:00 |
05:09:34.60 |
+34:53:41.0 |
HIP 23998 |
1.68 |
| 2026-08-09 00:00 |
05:09:39.62 |
+34:53:56.9 |
HIP 23998 |
2.33 |
| 2026-08-09 12:00 |
05:09:44.59 |
+34:54:12.8 |
HIP 23998 |
3.21 |
| 2026-08-10 00:00 |
05:09:49.52 |
+34:54:28.8 |
HIP 23998 |
4.16 |
| 2026-08-10 12:00 |
05:09:54.40 |
+34:54:44.8 |
HIP 23998 |
5.14 |
| 2026-08-11 00:00 |
05:09:59.23 |
+34:55:00.8 |
HIP 23998 |
6.13 |
| 2026-08-11 12:00 |
05:10:04.02 |
+34:55:16.8 |
HIP 23998 |
7.12 |
| 2026-08-12 00:00 |
05:10:08.76 |
+34:55:32.8 |
HIP 23998 |
8.11 |
| 2026-08-12 12:00 |
05:10:13.45 |
+34:55:48.9 |
HIP 23998 |
9.10 |
| 2026-08-13 00:00 |
05:10:18.09 |
+34:56:05.0 |
HIP 23998 |
10.07 |
| 2026-08-13 12:00 |
05:10:22.69 |
+34:56:21.1 |
HIP 23998 |
11.05 |
| 2026-08-14 00:00 |
05:10:27.23 |
+34:56:37.2 |
HIP 23998 |
12.01 |
| 2026-08-14 12:00 |
05:10:31.73 |
+34:56:53.4 |
HIP 23998 |
12.96 |
| 2026-08-15 00:00 |
05:10:36.18 |
+34:57:09.5 |
HIP 23998 |
13.91 |
| 2026-08-15 12:00 |
05:10:40.58 |
+34:57:25.7 |
HIP 23998 |
14.85 |
| 2026-08-16 00:00 |
05:10:44.92 |
+34:57:41.9 |
HIP 23998 |
15.78 |
| 2026-08-16 12:00 |
05:10:49.22 |
+34:57:58.1 |
HIP 23998 |
16.69 |
| 2026-08-17 00:00 |
05:10:53.47 |
+34:58:14.3 |
HIP 23998 |
17.60 |
| 2026-08-17 12:00 |
05:10:57.67 |
+34:58:30.6 |
HIP 23998 |
18.50 |
| 2026-08-18 00:00 |
05:11:01.81 |
+34:58:46.8 |
HIP 23998 |
19.39 |
| 2026-08-18 12:00 |
05:11:05.91 |
+34:59:03.0 |
HIP 23998 |
20.28 |
| 2026-08-19 00:00 |
05:11:09.95 |
+34:59:19.3 |
HIP 23998 |
21.15 |