メタデータ
| 項目 |
値 |
| Designation |
C/2013 P3 (Palomar) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-11-23T23:00:50.428800Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:38Z |
| Obs used |
492 |
| NEO |
- |
| M1 |
6.400 |
| K1 |
8.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2014-09-07.0000000 |
| e |
1.00115594 |
| q (au) |
8.646522 |
| a (au) |
-7480.047055 |
| i (deg) |
93.906204 |
| Ω (om, deg) |
177.275808 |
| ω (w, deg) |
177.190714 |
| M (ma, deg) |
-0.000119 |
等級
散乱 + 全体線形
$$
M_a = (2.034 + 4.864\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
2.034 |
| n |
4.864 |
| gf |
0.997 |
| gb |
-0.942 |
| k |
1.000 |
| δ90 |
9.998 |
| 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) |
| 2026-03-26 00:00 |
07:36:42.99 |
-67:52:25.6 |
HIP 37032 |
15.65 |
| 2026-03-26 12:00 |
07:36:41.16 |
-67:51:04.6 |
HIP 37032 |
14.30 |
| 2026-03-27 00:00 |
07:36:39.44 |
-67:49:43.4 |
HIP 37032 |
12.94 |
| 2026-03-27 12:00 |
07:36:37.84 |
-67:48:22.1 |
HIP 37032 |
11.58 |
| 2026-03-28 00:00 |
07:36:36.35 |
-67:47:00.5 |
HIP 37032 |
10.22 |
| 2026-03-28 12:00 |
07:36:34.98 |
-67:45:38.8 |
HIP 37032 |
8.86 |
| 2026-03-29 00:00 |
07:36:33.73 |
-67:44:17.0 |
HIP 37032 |
7.49 |
| 2026-03-29 12:00 |
07:36:32.59 |
-67:42:55.0 |
HIP 37032 |
6.13 |
| 2026-03-30 00:00 |
07:36:31.57 |
-67:41:32.8 |
HIP 37032 |
4.77 |
| 2026-03-30 12:00 |
07:36:30.67 |
-67:40:10.5 |
HIP 37032 |
3.42 |
| 2026-03-31 00:00 |
07:36:29.87 |
-67:38:48.1 |
HIP 37032 |
2.09 |
| 2026-03-31 12:00 |
07:36:29.20 |
-67:37:25.5 |
HIP 37032 |
0.90 |
| 2026-04-01 00:00 |
07:36:28.64 |
-67:36:02.8 |
HIP 37032 |
1.01 |
| 2026-04-01 12:00 |
07:36:28.19 |
-67:34:40.0 |
HIP 37032 |
2.25 |
| 2026-04-02 00:00 |
07:36:27.86 |
-67:33:17.1 |
HIP 37032 |
3.59 |
| 2026-04-02 12:00 |
07:36:27.64 |
-67:31:54.1 |
HIP 37032 |
4.95 |
| 2026-04-03 00:00 |
07:36:27.54 |
-67:30:31.0 |
HIP 37032 |
6.32 |
| 2026-04-03 12:00 |
07:36:27.54 |
-67:29:07.7 |
HIP 37002 |
6.51 |
| 2026-04-04 00:00 |
07:36:27.67 |
-67:27:44.4 |
HIP 37002 |
5.14 |
| 2026-04-04 12:00 |
07:36:27.90 |
-67:26:21.1 |
HIP 37002 |
3.80 |
| 2026-04-05 00:00 |
07:36:28.25 |
-67:24:57.6 |
HIP 37002 |
2.50 |
| 2026-04-05 12:00 |
07:36:28.71 |
-67:23:34.0 |
HIP 37002 |
1.42 |
| 2026-04-06 00:00 |
07:36:29.29 |
-67:22:10.4 |
HIP 37002 |
1.29 |
| 2026-04-06 12:00 |
07:36:29.98 |
-67:20:46.8 |
HIP 37002 |
2.29 |
| 2026-04-07 00:00 |
07:36:30.77 |
-67:19:23.0 |
HIP 37002 |
3.57 |
| 2026-04-07 12:00 |
07:36:31.68 |
-67:17:59.2 |
HIP 37002 |
4.92 |
| 2026-04-08 00:00 |
07:36:32.71 |
-67:16:35.4 |
HIP 37002 |
6.29 |
| 2026-04-08 12:00 |
07:36:33.84 |
-67:15:11.6 |
HIP 37002 |
7.68 |
| 2026-04-09 00:00 |
07:36:35.08 |
-67:13:47.7 |
HIP 37002 |
9.07 |
| 2026-04-09 12:00 |
07:36:36.44 |
-67:12:23.7 |
HIP 37002 |
10.47 |
| 2026-04-10 00:00 |
07:36:37.90 |
-67:10:59.8 |
HIP 37002 |
11.87 |
| 2026-04-10 12:00 |
07:36:39.48 |
-67:09:35.8 |
HIP 37002 |
13.28 |
| 2026-04-11 00:00 |
07:36:41.17 |
-67:08:11.8 |
HIP 37002 |
14.69 |
| 2026-04-11 12:00 |
07:36:42.96 |
-67:06:47.8 |
HIP 37002 |
16.10 |
| 2026-04-12 00:00 |
07:36:44.87 |
-67:05:23.9 |
HIP 37002 |
17.51 |
| 2026-04-12 12:00 |
07:36:46.88 |
-67:03:59.9 |
HIP 37002 |
18.92 |
| 2026-04-13 00:00 |
07:36:49.00 |
-67:02:35.9 |
HIP 37002 |
20.34 |
| 2026-04-13 12:00 |
07:36:51.23 |
-67:01:12.0 |
HIP 37002 |
21.75 |
| 2026-04-14 00:00 |
07:36:53.57 |
-66:59:48.0 |
HIP 37255 |
20.84 |
| 2026-04-14 12:00 |
07:36:56.02 |
-66:58:24.1 |
HIP 37255 |
19.60 |
| 2026-04-15 00:00 |
07:36:58.57 |
-66:57:00.3 |
HIP 37255 |
18.38 |
| 2026-04-15 12:00 |
07:37:01.23 |
-66:55:36.4 |
HIP 37255 |
17.19 |
| 2026-04-16 00:00 |
07:37:04.00 |
-66:54:12.7 |
HIP 37255 |
16.02 |