メタデータ
| 項目 |
値 |
| Designation |
C/1953 T1 (Abell) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1954-07-07T08:24:47.105280Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:12Z |
| Obs used |
39 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1954-03-29.0000000 |
| e |
1.00081195 |
| q (au) |
0.970185 |
| a (au) |
-1194.882510 |
| i (deg) |
53.228291 |
| Ω (om, deg) |
3.030697 |
| ω (w, deg) |
194.382085 |
| M (ma, deg) |
-0.002395 |
等級
散乱 + 全体線形
$$
M_a = (5.346 + 3.354\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
5.346 |
| n |
3.354 |
| gf |
0.831 |
| gb |
-0.664 |
| k |
1.000 |
| δ90 |
10.000 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
00:15:46.18 |
+04:01:29.0 |
HIP 1272 |
13.87 |
| 2026-06-01 12:00 |
00:15:46.64 |
+04:01:32.8 |
HIP 1272 |
13.78 |
| 2026-06-02 00:00 |
00:15:47.09 |
+04:01:36.6 |
HIP 1272 |
13.70 |
| 2026-06-02 12:00 |
00:15:47.53 |
+04:01:40.4 |
HIP 1272 |
13.62 |
| 2026-06-03 00:00 |
00:15:47.96 |
+04:01:44.0 |
HIP 1272 |
13.54 |
| 2026-06-03 12:00 |
00:15:48.38 |
+04:01:47.7 |
HIP 1272 |
13.46 |
| 2026-06-04 00:00 |
00:15:48.80 |
+04:01:51.2 |
HIP 1272 |
13.38 |
| 2026-06-04 12:00 |
00:15:49.20 |
+04:01:54.8 |
HIP 1272 |
13.31 |
| 2026-06-05 00:00 |
00:15:49.60 |
+04:01:58.2 |
HIP 1272 |
13.24 |
| 2026-06-05 12:00 |
00:15:49.99 |
+04:02:01.7 |
HIP 1272 |
13.17 |
| 2026-06-06 00:00 |
00:15:50.37 |
+04:02:05.0 |
HIP 1272 |
13.10 |
| 2026-06-06 12:00 |
00:15:50.74 |
+04:02:08.3 |
HIP 1272 |
13.03 |
| 2026-06-07 00:00 |
00:15:51.10 |
+04:02:11.6 |
HIP 1272 |
12.97 |
| 2026-06-07 12:00 |
00:15:51.45 |
+04:02:14.8 |
HIP 1272 |
12.91 |
| 2026-06-08 00:00 |
00:15:51.80 |
+04:02:17.9 |
HIP 1272 |
12.84 |
| 2026-06-08 12:00 |
00:15:52.13 |
+04:02:21.0 |
HIP 1272 |
12.78 |
| 2026-06-09 00:00 |
00:15:52.46 |
+04:02:24.0 |
HIP 1272 |
12.73 |
| 2026-06-09 12:00 |
00:15:52.78 |
+04:02:27.0 |
HIP 1272 |
12.67 |
| 2026-06-10 00:00 |
00:15:53.09 |
+04:02:30.0 |
HIP 1272 |
12.61 |
| 2026-06-10 12:00 |
00:15:53.39 |
+04:02:32.8 |
HIP 1272 |
12.56 |
| 2026-06-11 00:00 |
00:15:53.68 |
+04:02:35.6 |
HIP 1272 |
12.51 |
| 2026-06-11 12:00 |
00:15:53.96 |
+04:02:38.4 |
HIP 1272 |
12.46 |
| 2026-06-12 00:00 |
00:15:54.23 |
+04:02:41.1 |
HIP 1272 |
12.41 |
| 2026-06-12 12:00 |
00:15:54.50 |
+04:02:43.7 |
HIP 1272 |
12.36 |
| 2026-06-13 00:00 |
00:15:54.75 |
+04:02:46.3 |
HIP 1272 |
12.31 |
| 2026-06-13 12:00 |
00:15:55.00 |
+04:02:48.8 |
HIP 1272 |
12.27 |
| 2026-06-14 00:00 |
00:15:55.23 |
+04:02:51.3 |
HIP 1272 |
12.22 |
| 2026-06-14 12:00 |
00:15:55.46 |
+04:02:53.7 |
HIP 1272 |
12.18 |
| 2026-06-15 00:00 |
00:15:55.68 |
+04:02:56.1 |
HIP 1272 |
12.14 |
| 2026-06-15 12:00 |
00:15:55.89 |
+04:02:58.4 |
HIP 1272 |
12.10 |
| 2026-06-16 00:00 |
00:15:56.09 |
+04:03:00.6 |
HIP 1272 |
12.06 |
| 2026-06-16 12:00 |
00:15:56.28 |
+04:03:02.8 |
HIP 1272 |
12.03 |
| 2026-06-17 00:00 |
00:15:56.46 |
+04:03:04.9 |
HIP 1272 |
11.99 |
| 2026-06-17 12:00 |
00:15:56.64 |
+04:03:07.0 |
HIP 1272 |
11.95 |
| 2026-06-18 00:00 |
00:15:56.80 |
+04:03:09.0 |
HIP 1272 |
11.92 |
| 2026-06-18 12:00 |
00:15:56.95 |
+04:03:10.9 |
HIP 1272 |
11.89 |
| 2026-06-19 00:00 |
00:15:57.10 |
+04:03:12.8 |
HIP 1272 |
11.86 |
| 2026-06-19 12:00 |
00:15:57.23 |
+04:03:14.6 |
HIP 1272 |
11.83 |
| 2026-06-20 00:00 |
00:15:57.36 |
+04:03:16.4 |
HIP 1272 |
11.80 |
| 2026-06-20 12:00 |
00:15:57.48 |
+04:03:18.1 |
HIP 1272 |
11.77 |
| 2026-06-21 00:00 |
00:15:57.58 |
+04:03:19.8 |
HIP 1272 |
11.74 |
| 2026-06-21 12:00 |
00:15:57.68 |
+04:03:21.3 |
HIP 1272 |
11.71 |
| 2026-06-22 00:00 |
00:15:57.77 |
+04:03:22.9 |
HIP 1272 |
11.69 |