メタデータ
| 項目 |
値 |
| Designation |
C/1879 Q1 (Palisa) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1879-10-05T03:30:11.998080Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:28:51Z |
| Obs used |
12 |
| 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) |
1879-09-25.0000000 |
| e |
1.00000000 |
| q (au) |
0.989534 |
| a (au) |
- |
| i (deg) |
77.124284 |
| Ω (om, deg) |
88.875147 |
| ω (w, deg) |
115.480262 |
| M (ma, deg) |
- |
等級
散乱 + 全体線形
$$
M_a = (H_0 + n\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
- |
| n |
- |
| gf |
- |
| gb |
- |
| k |
- |
| δ90 |
- |
| 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 |
04:44:18.11 |
-48:10:04.7 |
HIP 22006 |
10.69 |
| 2026-07-29 12:00 |
04:44:18.78 |
-48:10:12.9 |
HIP 22006 |
10.62 |
| 2026-07-30 00:00 |
04:44:19.44 |
-48:10:21.1 |
HIP 22006 |
10.55 |
| 2026-07-30 12:00 |
04:44:20.09 |
-48:10:29.4 |
HIP 22006 |
10.48 |
| 2026-07-31 00:00 |
04:44:20.74 |
-48:10:37.8 |
HIP 22006 |
10.41 |
| 2026-07-31 12:00 |
04:44:21.37 |
-48:10:46.2 |
HIP 22006 |
10.34 |
| 2026-08-01 00:00 |
04:44:22.00 |
-48:10:54.7 |
HIP 22006 |
10.28 |
| 2026-08-01 12:00 |
04:44:22.62 |
-48:11:03.2 |
HIP 22006 |
10.21 |
| 2026-08-02 00:00 |
04:44:23.24 |
-48:11:11.8 |
HIP 22006 |
10.15 |
| 2026-08-02 12:00 |
04:44:23.84 |
-48:11:20.5 |
HIP 22006 |
10.09 |
| 2026-08-03 00:00 |
04:44:24.44 |
-48:11:29.1 |
HIP 22006 |
10.02 |
| 2026-08-03 12:00 |
04:44:25.03 |
-48:11:37.9 |
HIP 22006 |
9.96 |
| 2026-08-04 00:00 |
04:44:25.61 |
-48:11:46.7 |
HIP 22006 |
9.90 |
| 2026-08-04 12:00 |
04:44:26.19 |
-48:11:55.5 |
HIP 22006 |
9.84 |
| 2026-08-05 00:00 |
04:44:26.76 |
-48:12:04.4 |
HIP 22006 |
9.79 |
| 2026-08-05 12:00 |
04:44:27.31 |
-48:12:13.4 |
HIP 22006 |
9.73 |
| 2026-08-06 00:00 |
04:44:27.86 |
-48:12:22.3 |
HIP 22006 |
9.68 |
| 2026-08-06 12:00 |
04:44:28.40 |
-48:12:31.4 |
HIP 22006 |
9.63 |
| 2026-08-07 00:00 |
04:44:28.94 |
-48:12:40.5 |
HIP 22006 |
9.57 |
| 2026-08-07 12:00 |
04:44:29.46 |
-48:12:49.6 |
HIP 22006 |
9.52 |
| 2026-08-08 00:00 |
04:44:29.98 |
-48:12:58.8 |
HIP 22006 |
9.48 |
| 2026-08-08 12:00 |
04:44:30.49 |
-48:13:08.0 |
HIP 22006 |
9.43 |
| 2026-08-09 00:00 |
04:44:30.99 |
-48:13:17.3 |
HIP 22006 |
9.38 |
| 2026-08-09 12:00 |
04:44:31.48 |
-48:13:26.6 |
HIP 22006 |
9.34 |
| 2026-08-10 00:00 |
04:44:31.96 |
-48:13:36.0 |
HIP 22006 |
9.30 |
| 2026-08-10 12:00 |
04:44:32.44 |
-48:13:45.4 |
HIP 22006 |
9.26 |
| 2026-08-11 00:00 |
04:44:32.90 |
-48:13:54.8 |
HIP 22006 |
9.22 |
| 2026-08-11 12:00 |
04:44:33.36 |
-48:14:04.3 |
HIP 22006 |
9.18 |
| 2026-08-12 00:00 |
04:44:33.81 |
-48:14:13.9 |
HIP 22006 |
9.14 |
| 2026-08-12 12:00 |
04:44:34.25 |
-48:14:23.4 |
HIP 22006 |
9.11 |
| 2026-08-13 00:00 |
04:44:34.68 |
-48:14:33.1 |
HIP 22006 |
9.08 |
| 2026-08-13 12:00 |
04:44:35.10 |
-48:14:42.7 |
HIP 22006 |
9.04 |
| 2026-08-14 00:00 |
04:44:35.51 |
-48:14:52.4 |
HIP 22006 |
9.02 |
| 2026-08-14 12:00 |
04:44:35.92 |
-48:15:02.1 |
HIP 22006 |
8.99 |
| 2026-08-15 00:00 |
04:44:36.31 |
-48:15:11.9 |
HIP 22006 |
8.96 |
| 2026-08-15 12:00 |
04:44:36.70 |
-48:15:21.7 |
HIP 22006 |
8.94 |
| 2026-08-16 00:00 |
04:44:37.08 |
-48:15:31.5 |
HIP 22006 |
8.92 |
| 2026-08-16 12:00 |
04:44:37.44 |
-48:15:41.4 |
HIP 22006 |
8.90 |
| 2026-08-17 00:00 |
04:44:37.80 |
-48:15:51.3 |
HIP 22006 |
8.88 |
| 2026-08-17 12:00 |
04:44:38.15 |
-48:16:01.3 |
HIP 22006 |
8.86 |
| 2026-08-18 00:00 |
04:44:38.49 |
-48:16:11.2 |
HIP 22006 |
8.84 |
| 2026-08-18 12:00 |
04:44:38.83 |
-48:16:21.2 |
HIP 22006 |
8.83 |
| 2026-08-19 00:00 |
04:44:39.15 |
-48:16:31.3 |
HIP 22006 |
8.82 |