C/2001 C1 (LINEAR)
メタデータ
| 項目 |
値 |
| Designation |
C/2001 C1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2002-03-28T09:55:55.508160Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:08Z |
| Obs used |
229 |
| NEO |
- |
| M1 |
6.700 |
| K1 |
9.750 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2001-04-12.0000000 |
| e |
0.99987490 |
| q (au) |
5.104333 |
| a (au) |
40802.601593 |
| i (deg) |
68.964525 |
| Ω (om, deg) |
33.716342 |
| ω (w, deg) |
219.949836 |
| M (ma, deg) |
359.999958 |
等級
散乱 + 全体線形
$$
M_a = (8.962 + 2.253\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
8.962 |
| n |
2.253 |
| gf |
0.885 |
| gb |
-0.998 |
| k |
1.000 |
| δ90 |
9.406 |
| 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) |
| 2026-02-03 00:00 |
02:00:47.57 |
+11:29:00.8 |
HIP 9561 |
31.07 |
| 2026-02-03 12:00 |
02:00:48.11 |
+11:29:07.5 |
HIP 9561 |
30.97 |
| 2026-02-04 00:00 |
02:00:48.68 |
+11:29:14.3 |
HIP 9561 |
30.86 |
| 2026-02-04 12:00 |
02:00:49.26 |
+11:29:21.2 |
HIP 9561 |
30.74 |
| 2026-02-05 00:00 |
02:00:49.87 |
+11:29:28.2 |
HIP 9561 |
30.63 |
| 2026-02-05 12:00 |
02:00:50.51 |
+11:29:35.4 |
HIP 9561 |
30.50 |
| 2026-02-06 00:00 |
02:00:51.16 |
+11:29:42.6 |
HIP 9561 |
30.38 |
| 2026-02-06 12:00 |
02:00:51.84 |
+11:29:50.0 |
HIP 9561 |
30.24 |
| 2026-02-07 00:00 |
02:00:52.54 |
+11:29:57.5 |
HIP 9561 |
30.11 |
| 2026-02-07 12:00 |
02:00:53.27 |
+11:30:05.1 |
HIP 9561 |
29.97 |
| 2026-02-08 00:00 |
02:00:54.01 |
+11:30:12.9 |
HIP 9561 |
29.83 |
| 2026-02-08 12:00 |
02:00:54.78 |
+11:30:20.7 |
HIP 9561 |
29.68 |
| 2026-02-09 00:00 |
02:00:55.57 |
+11:30:28.7 |
HIP 9561 |
29.53 |
| 2026-02-09 12:00 |
02:00:56.38 |
+11:30:36.8 |
HIP 9561 |
29.38 |
| 2026-02-10 00:00 |
02:00:57.22 |
+11:30:45.0 |
HIP 9561 |
29.22 |
| 2026-02-10 12:00 |
02:00:58.08 |
+11:30:53.3 |
HIP 9561 |
29.06 |
| 2026-02-11 00:00 |
02:00:58.95 |
+11:31:01.7 |
HIP 9561 |
28.90 |
| 2026-02-11 12:00 |
02:00:59.85 |
+11:31:10.3 |
HIP 9561 |
28.73 |
| 2026-02-12 00:00 |
02:01:00.78 |
+11:31:18.9 |
HIP 9561 |
28.56 |
| 2026-02-12 12:00 |
02:01:01.72 |
+11:31:27.7 |
HIP 9561 |
28.39 |
| 2026-02-13 00:00 |
02:01:02.69 |
+11:31:36.6 |
HIP 9561 |
28.21 |
| 2026-02-13 12:00 |
02:01:03.67 |
+11:31:45.6 |
HIP 9561 |
28.03 |
| 2026-02-14 00:00 |
02:01:04.68 |
+11:31:54.7 |
HIP 9561 |
27.85 |
| 2026-02-14 12:00 |
02:01:05.71 |
+11:32:03.9 |
HIP 9561 |
27.67 |
| 2026-02-15 00:00 |
02:01:06.76 |
+11:32:13.2 |
HIP 9561 |
27.48 |
| 2026-02-15 12:00 |
02:01:07.83 |
+11:32:22.7 |
HIP 9561 |
27.29 |
| 2026-02-16 00:00 |
02:01:08.93 |
+11:32:32.2 |
HIP 9561 |
27.10 |
| 2026-02-16 12:00 |
02:01:10.04 |
+11:32:41.9 |
HIP 9561 |
26.91 |
| 2026-02-17 00:00 |
02:01:11.18 |
+11:32:51.6 |
HIP 9561 |
26.72 |
| 2026-02-17 12:00 |
02:01:12.33 |
+11:33:01.5 |
HIP 9561 |
26.53 |
| 2026-02-18 00:00 |
02:01:13.51 |
+11:33:11.5 |
HIP 9561 |
26.33 |
| 2026-02-18 12:00 |
02:01:14.71 |
+11:33:21.6 |
HIP 9561 |
26.13 |
| 2026-02-19 00:00 |
02:01:15.93 |
+11:33:31.8 |
HIP 9561 |
25.94 |
| 2026-02-19 12:00 |
02:01:17.16 |
+11:33:42.1 |
HIP 9561 |
25.74 |
| 2026-02-20 00:00 |
02:01:18.42 |
+11:33:52.5 |
HIP 9561 |
25.54 |
| 2026-02-20 12:00 |
02:01:19.70 |
+11:34:03.0 |
HIP 9561 |
25.34 |
| 2026-02-21 00:00 |
02:01:21.00 |
+11:34:13.6 |
HIP 9561 |
25.14 |
| 2026-02-21 12:00 |
02:01:22.32 |
+11:34:24.3 |
HIP 9561 |
24.94 |
| 2026-02-22 00:00 |
02:01:23.66 |
+11:34:35.1 |
HIP 9561 |
24.75 |
| 2026-02-22 12:00 |
02:01:25.01 |
+11:34:46.0 |
HIP 9561 |
24.55 |
| 2026-02-23 00:00 |
02:01:26.39 |
+11:34:57.0 |
HIP 9561 |
24.35 |
| 2026-02-23 12:00 |
02:01:27.79 |
+11:35:08.1 |
HIP 9561 |
24.16 |
| 2026-02-24 00:00 |
02:01:29.20 |
+11:35:19.3 |
HIP 9561 |
23.97 |