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) |
| 2026-07-29 00:00 |
23:02:28.48 |
-68:41:44.6 |
HIP 113969 |
15.01 |
| 2026-07-29 12:00 |
23:02:26.41 |
-68:41:55.0 |
HIP 113969 |
15.09 |
| 2026-07-30 00:00 |
23:02:24.32 |
-68:42:05.4 |
HIP 113969 |
15.17 |
| 2026-07-30 12:00 |
23:02:22.22 |
-68:42:15.7 |
HIP 113969 |
15.26 |
| 2026-07-31 00:00 |
23:02:20.11 |
-68:42:25.9 |
HIP 113969 |
15.35 |
| 2026-07-31 12:00 |
23:02:17.98 |
-68:42:36.0 |
HIP 113969 |
15.45 |
| 2026-08-01 00:00 |
23:02:15.84 |
-68:42:46.1 |
HIP 113969 |
15.55 |
| 2026-08-01 12:00 |
23:02:13.69 |
-68:42:56.0 |
HIP 113969 |
15.66 |
| 2026-08-02 00:00 |
23:02:11.52 |
-68:43:05.9 |
HIP 113969 |
15.78 |
| 2026-08-02 12:00 |
23:02:09.34 |
-68:43:15.7 |
HIP 113969 |
15.90 |
| 2026-08-03 00:00 |
23:02:07.14 |
-68:43:25.4 |
HIP 113969 |
16.02 |
| 2026-08-03 12:00 |
23:02:04.93 |
-68:43:35.0 |
HIP 113969 |
16.15 |
| 2026-08-04 00:00 |
23:02:02.71 |
-68:43:44.6 |
HIP 113969 |
16.28 |
| 2026-08-04 12:00 |
23:02:00.48 |
-68:43:54.0 |
HIP 113969 |
16.42 |
| 2026-08-05 00:00 |
23:01:58.24 |
-68:44:03.4 |
HIP 113969 |
16.56 |
| 2026-08-05 12:00 |
23:01:55.98 |
-68:44:12.7 |
HIP 113969 |
16.71 |
| 2026-08-06 00:00 |
23:01:53.71 |
-68:44:21.9 |
HIP 113969 |
16.86 |
| 2026-08-06 12:00 |
23:01:51.43 |
-68:44:31.0 |
HIP 113969 |
17.02 |
| 2026-08-07 00:00 |
23:01:49.13 |
-68:44:40.0 |
HIP 113969 |
17.17 |
| 2026-08-07 12:00 |
23:01:46.83 |
-68:44:48.9 |
HIP 113969 |
17.34 |
| 2026-08-08 00:00 |
23:01:44.51 |
-68:44:57.7 |
HIP 113969 |
17.50 |
| 2026-08-08 12:00 |
23:01:42.18 |
-68:45:06.5 |
HIP 113969 |
17.67 |
| 2026-08-09 00:00 |
23:01:39.85 |
-68:45:15.1 |
HIP 113969 |
17.84 |
| 2026-08-09 12:00 |
23:01:37.50 |
-68:45:23.7 |
HIP 113969 |
18.02 |
| 2026-08-10 00:00 |
23:01:35.13 |
-68:45:32.1 |
HIP 113969 |
18.20 |
| 2026-08-10 12:00 |
23:01:32.76 |
-68:45:40.5 |
HIP 113969 |
18.38 |
| 2026-08-11 00:00 |
23:01:30.38 |
-68:45:48.8 |
HIP 113969 |
18.56 |
| 2026-08-11 12:00 |
23:01:27.99 |
-68:45:56.9 |
HIP 113969 |
18.75 |
| 2026-08-12 00:00 |
23:01:25.59 |
-68:46:05.0 |
HIP 113969 |
18.94 |
| 2026-08-12 12:00 |
23:01:23.17 |
-68:46:13.0 |
HIP 113969 |
19.13 |
| 2026-08-13 00:00 |
23:01:20.75 |
-68:46:20.9 |
HIP 113969 |
19.33 |
| 2026-08-13 12:00 |
23:01:18.32 |
-68:46:28.6 |
HIP 113969 |
19.53 |
| 2026-08-14 00:00 |
23:01:15.88 |
-68:46:36.3 |
HIP 113969 |
19.73 |
| 2026-08-14 12:00 |
23:01:13.43 |
-68:46:43.9 |
HIP 113969 |
19.93 |
| 2026-08-15 00:00 |
23:01:10.97 |
-68:46:51.4 |
HIP 113969 |
20.13 |
| 2026-08-15 12:00 |
23:01:08.50 |
-68:46:58.7 |
HIP 113969 |
20.34 |
| 2026-08-16 00:00 |
23:01:06.02 |
-68:47:06.0 |
HIP 113969 |
20.55 |
| 2026-08-16 12:00 |
23:01:03.54 |
-68:47:13.2 |
HIP 113969 |
20.76 |
| 2026-08-17 00:00 |
23:01:01.05 |
-68:47:20.2 |
HIP 113870 |
20.89 |
| 2026-08-17 12:00 |
23:00:58.54 |
-68:47:27.2 |
HIP 113870 |
20.95 |
| 2026-08-18 00:00 |
23:00:56.04 |
-68:47:34.0 |
HIP 113870 |
21.02 |
| 2026-08-18 12:00 |
23:00:53.52 |
-68:47:40.8 |
HIP 113870 |
21.09 |
| 2026-08-19 00:00 |
23:00:51.00 |
-68:47:47.4 |
HIP 113870 |
21.17 |