メタデータ
| 項目 |
値 |
| Designation |
C/1932 P1 (Peltier-Whipple) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1932-09-01T20:28:52.584960Z |
| Orbit solution date (soln_date, UTC) |
2023-12-04T20:32:29Z |
| Obs used |
56 |
| NEO |
- |
| M1 |
8.100 |
| K1 |
38.250 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1932-08-31.0000000 |
| e |
0.97689337 |
| q (au) |
1.037233 |
| a (au) |
44.888968 |
| i (deg) |
71.723285 |
| Ω (om, deg) |
345.466351 |
| ω (w, deg) |
38.467110 |
| M (ma, deg) |
359.993926 |
等級
散乱 + 全体線形
$$
M_a = (7.490 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
7.490 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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 |
10:52:05.52 |
-28:31:43.3 |
HIP 53221 |
16.73 |
| 2026-06-01 12:00 |
10:52:05.47 |
-28:31:30.8 |
HIP 53221 |
16.63 |
| 2026-06-02 00:00 |
10:52:05.43 |
-28:31:18.3 |
HIP 53221 |
16.52 |
| 2026-06-02 12:00 |
10:52:05.41 |
-28:31:05.9 |
HIP 53221 |
16.42 |
| 2026-06-03 00:00 |
10:52:05.41 |
-28:30:53.6 |
HIP 53221 |
16.32 |
| 2026-06-03 12:00 |
10:52:05.41 |
-28:30:41.3 |
HIP 53221 |
16.21 |
| 2026-06-04 00:00 |
10:52:05.43 |
-28:30:29.1 |
HIP 53221 |
16.11 |
| 2026-06-04 12:00 |
10:52:05.46 |
-28:30:17.0 |
HIP 53221 |
16.01 |
| 2026-06-05 00:00 |
10:52:05.50 |
-28:30:04.9 |
HIP 53221 |
15.90 |
| 2026-06-05 12:00 |
10:52:05.56 |
-28:29:52.9 |
HIP 53221 |
15.80 |
| 2026-06-06 00:00 |
10:52:05.63 |
-28:29:40.9 |
HIP 53221 |
15.70 |
| 2026-06-06 12:00 |
10:52:05.71 |
-28:29:29.0 |
HIP 53221 |
15.59 |
| 2026-06-07 00:00 |
10:52:05.80 |
-28:29:17.2 |
HIP 53221 |
15.49 |
| 2026-06-07 12:00 |
10:52:05.91 |
-28:29:05.4 |
HIP 53221 |
15.39 |
| 2026-06-08 00:00 |
10:52:06.03 |
-28:28:53.7 |
HIP 53221 |
15.28 |
| 2026-06-08 12:00 |
10:52:06.16 |
-28:28:42.1 |
HIP 53221 |
15.18 |
| 2026-06-09 00:00 |
10:52:06.31 |
-28:28:30.5 |
HIP 53221 |
15.07 |
| 2026-06-09 12:00 |
10:52:06.47 |
-28:28:19.0 |
HIP 53221 |
14.96 |
| 2026-06-10 00:00 |
10:52:06.64 |
-28:28:07.6 |
HIP 53221 |
14.86 |
| 2026-06-10 12:00 |
10:52:06.82 |
-28:27:56.2 |
HIP 53221 |
14.75 |
| 2026-06-11 00:00 |
10:52:07.02 |
-28:27:45.0 |
HIP 53221 |
14.65 |
| 2026-06-11 12:00 |
10:52:07.23 |
-28:27:33.8 |
HIP 53221 |
14.54 |
| 2026-06-12 00:00 |
10:52:07.45 |
-28:27:22.6 |
HIP 53221 |
14.43 |
| 2026-06-12 12:00 |
10:52:07.69 |
-28:27:11.6 |
HIP 53221 |
14.32 |
| 2026-06-13 00:00 |
10:52:07.94 |
-28:27:00.6 |
HIP 53221 |
14.21 |
| 2026-06-13 12:00 |
10:52:08.20 |
-28:26:49.7 |
HIP 53221 |
14.10 |
| 2026-06-14 00:00 |
10:52:08.47 |
-28:26:38.9 |
HIP 53221 |
13.99 |
| 2026-06-14 12:00 |
10:52:08.76 |
-28:26:28.1 |
HIP 53221 |
13.88 |
| 2026-06-15 00:00 |
10:52:09.06 |
-28:26:17.4 |
HIP 53221 |
13.77 |
| 2026-06-15 12:00 |
10:52:09.37 |
-28:26:06.9 |
HIP 53221 |
13.66 |
| 2026-06-16 00:00 |
10:52:09.69 |
-28:25:56.3 |
HIP 53221 |
13.55 |
| 2026-06-16 12:00 |
10:52:10.03 |
-28:25:45.9 |
HIP 53221 |
13.44 |
| 2026-06-17 00:00 |
10:52:10.38 |
-28:25:35.6 |
HIP 53221 |
13.32 |
| 2026-06-17 12:00 |
10:52:10.74 |
-28:25:25.3 |
HIP 53221 |
13.21 |
| 2026-06-18 00:00 |
10:52:11.11 |
-28:25:15.1 |
HIP 53221 |
13.09 |
| 2026-06-18 12:00 |
10:52:11.50 |
-28:25:05.1 |
HIP 53221 |
12.98 |
| 2026-06-19 00:00 |
10:52:11.89 |
-28:24:55.1 |
HIP 53221 |
12.86 |
| 2026-06-19 12:00 |
10:52:12.31 |
-28:24:45.1 |
HIP 53221 |
12.74 |
| 2026-06-20 00:00 |
10:52:12.73 |
-28:24:35.3 |
HIP 53221 |
12.63 |
| 2026-06-20 12:00 |
10:52:13.16 |
-28:24:25.6 |
HIP 53221 |
12.51 |
| 2026-06-21 00:00 |
10:52:13.61 |
-28:24:15.9 |
HIP 53221 |
12.39 |
| 2026-06-21 12:00 |
10:52:14.07 |
-28:24:06.3 |
HIP 53221 |
12.27 |
| 2026-06-22 00:00 |
10:52:14.54 |
-28:23:56.9 |
HIP 53221 |
12.15 |