C/1933 D1 (Peltier)
メタデータ
| 項目 |
値 |
| Designation |
C/1933 D1 (Peltier) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1933-02-06T16:43:23.779200Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:05Z |
| Obs used |
14 |
| NEO |
- |
| M1 |
11.300 |
| K1 |
12.000 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1933-03-01.0000000 |
| e |
0.99999873 |
| q (au) |
1.000679 |
| a (au) |
787220.711133 |
| i (deg) |
86.680374 |
| Ω (om, deg) |
312.466777 |
| ω (w, deg) |
135.984212 |
| M (ma, deg) |
0.000000 |
等級
散乱 + 全体線形
$$
M_a = (10.760 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
10.760 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.800 |
| 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) |
| 2026-02-03 00:00 |
22:56:57.71 |
-68:04:37.6 |
HIP 113497 |
14.51 |
| 2026-02-03 12:00 |
22:56:59.95 |
-68:04:28.1 |
HIP 113497 |
14.42 |
| 2026-02-04 00:00 |
22:57:02.21 |
-68:04:18.8 |
HIP 113497 |
14.34 |
| 2026-02-04 12:00 |
22:57:04.48 |
-68:04:09.5 |
HIP 113497 |
14.25 |
| 2026-02-05 00:00 |
22:57:06.75 |
-68:04:00.4 |
HIP 113497 |
14.17 |
| 2026-02-05 12:00 |
22:57:09.04 |
-68:03:51.3 |
HIP 113497 |
14.10 |
| 2026-02-06 00:00 |
22:57:11.34 |
-68:03:42.3 |
HIP 113497 |
14.02 |
| 2026-02-06 12:00 |
22:57:13.64 |
-68:03:33.5 |
HIP 113497 |
13.95 |
| 2026-02-07 00:00 |
22:57:15.96 |
-68:03:24.7 |
HIP 113497 |
13.88 |
| 2026-02-07 12:00 |
22:57:18.28 |
-68:03:16.0 |
HIP 113497 |
13.81 |
| 2026-02-08 00:00 |
22:57:20.61 |
-68:03:07.4 |
HIP 113497 |
13.75 |
| 2026-02-08 12:00 |
22:57:22.96 |
-68:02:58.9 |
HIP 113497 |
13.69 |
| 2026-02-09 00:00 |
22:57:25.31 |
-68:02:50.5 |
HIP 113497 |
13.63 |
| 2026-02-09 12:00 |
22:57:27.67 |
-68:02:42.2 |
HIP 113497 |
13.57 |
| 2026-02-10 00:00 |
22:57:30.03 |
-68:02:34.0 |
HIP 113497 |
13.52 |
| 2026-02-10 12:00 |
22:57:32.41 |
-68:02:25.9 |
HIP 113497 |
13.47 |
| 2026-02-11 00:00 |
22:57:34.79 |
-68:02:17.9 |
HIP 113497 |
13.43 |
| 2026-02-11 12:00 |
22:57:37.18 |
-68:02:10.0 |
HIP 113497 |
13.38 |
| 2026-02-12 00:00 |
22:57:39.58 |
-68:02:02.2 |
HIP 113497 |
13.34 |
| 2026-02-12 12:00 |
22:57:41.99 |
-68:01:54.5 |
HIP 113497 |
13.31 |
| 2026-02-13 00:00 |
22:57:44.40 |
-68:01:46.9 |
HIP 113497 |
13.27 |
| 2026-02-13 12:00 |
22:57:46.82 |
-68:01:39.5 |
HIP 113497 |
13.24 |
| 2026-02-14 00:00 |
22:57:49.25 |
-68:01:32.1 |
HIP 113497 |
13.22 |
| 2026-02-14 12:00 |
22:57:51.69 |
-68:01:24.8 |
HIP 113497 |
13.19 |
| 2026-02-15 00:00 |
22:57:54.13 |
-68:01:17.6 |
HIP 113497 |
13.17 |
| 2026-02-15 12:00 |
22:57:56.57 |
-68:01:10.5 |
HIP 113497 |
13.15 |
| 2026-02-16 00:00 |
22:57:59.03 |
-68:01:03.6 |
HIP 113497 |
13.14 |
| 2026-02-16 12:00 |
22:58:01.49 |
-68:00:56.7 |
HIP 113497 |
13.13 |
| 2026-02-17 00:00 |
22:58:03.95 |
-68:00:50.0 |
HIP 113497 |
13.12 |
| 2026-02-17 12:00 |
22:58:06.42 |
-68:00:43.3 |
HIP 113497 |
13.11 |
| 2026-02-18 00:00 |
22:58:08.90 |
-68:00:36.8 |
HIP 113497 |
13.11 |
| 2026-02-18 12:00 |
22:58:11.38 |
-68:00:30.4 |
HIP 113497 |
13.11 |
| 2026-02-19 00:00 |
22:58:13.87 |
-68:00:24.0 |
HIP 113497 |
13.12 |
| 2026-02-19 12:00 |
22:58:16.36 |
-68:00:17.8 |
HIP 113497 |
13.12 |
| 2026-02-20 00:00 |
22:58:18.86 |
-68:00:11.7 |
HIP 113497 |
13.13 |
| 2026-02-20 12:00 |
22:58:21.36 |
-68:00:05.8 |
HIP 113497 |
13.15 |
| 2026-02-21 00:00 |
22:58:23.86 |
-67:59:59.9 |
HIP 113497 |
13.16 |
| 2026-02-21 12:00 |
22:58:26.37 |
-67:59:54.1 |
HIP 113497 |
13.18 |
| 2026-02-22 00:00 |
22:58:28.88 |
-67:59:48.5 |
HIP 113497 |
13.20 |
| 2026-02-22 12:00 |
22:58:31.40 |
-67:59:42.9 |
HIP 113497 |
13.23 |
| 2026-02-23 00:00 |
22:58:33.92 |
-67:59:37.5 |
HIP 113497 |
13.26 |
| 2026-02-23 12:00 |
22:58:36.44 |
-67:59:32.2 |
HIP 113497 |
13.29 |
| 2026-02-24 00:00 |
22:58:38.96 |
-67:59:27.0 |
HIP 113497 |
13.32 |