メタデータ
| 項目 |
値 |
| Designation |
C/2011 K1 (Schwartz-Holvorcem) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2011-04-21T22:15:47.076480Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:50Z |
| Obs used |
114 |
| NEO |
- |
| M1 |
11.700 |
| K1 |
10.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2011-06-03.0000000 |
| e |
1.00702797 |
| q (au) |
3.376629 |
| a (au) |
-480.455780 |
| i (deg) |
122.624865 |
| Ω (om, deg) |
70.737393 |
| ω (w, deg) |
167.097081 |
| M (ma, deg) |
0.003938 |
等級
散乱 + 全体線形
$$
M_a = (13.629 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
13.629 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.980 |
| 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) |
| 2026-09-20 00:00 |
06:53:41.25 |
-18:05:34.1 |
HIP 33146 |
12.75 |
| 2026-09-20 12:00 |
06:53:41.98 |
-18:06:06.4 |
HIP 33146 |
13.16 |
| 2026-09-21 00:00 |
06:53:42.67 |
-18:06:38.8 |
HIP 33146 |
13.58 |
| 2026-09-21 12:00 |
06:53:43.34 |
-18:07:11.3 |
HIP 33146 |
14.01 |
| 2026-09-22 00:00 |
06:53:43.97 |
-18:07:43.8 |
HIP 33146 |
14.46 |
| 2026-09-22 12:00 |
06:53:44.57 |
-18:08:16.3 |
HIP 33146 |
14.92 |
| 2026-09-23 00:00 |
06:53:45.14 |
-18:08:48.9 |
HIP 33146 |
15.39 |
| 2026-09-23 12:00 |
06:53:45.68 |
-18:09:21.5 |
HIP 33146 |
15.87 |
| 2026-09-24 00:00 |
06:53:46.19 |
-18:09:54.2 |
HIP 33146 |
16.35 |
| 2026-09-24 12:00 |
06:53:46.66 |
-18:10:26.9 |
HIP 33146 |
16.85 |
| 2026-09-25 00:00 |
06:53:47.10 |
-18:10:59.7 |
HIP 33146 |
17.35 |
| 2026-09-25 12:00 |
06:53:47.51 |
-18:11:32.4 |
HIP 33146 |
17.85 |
| 2026-09-26 00:00 |
06:53:47.89 |
-18:12:05.3 |
HIP 33146 |
18.36 |
| 2026-09-26 12:00 |
06:53:48.24 |
-18:12:38.1 |
HIP 33146 |
18.88 |
| 2026-09-27 00:00 |
06:53:48.55 |
-18:13:11.0 |
HIP 33146 |
19.39 |
| 2026-09-27 12:00 |
06:53:48.83 |
-18:13:43.9 |
HIP 33146 |
19.92 |
| 2026-09-28 00:00 |
06:53:49.08 |
-18:14:16.8 |
HIP 33138 |
19.86 |
| 2026-09-28 12:00 |
06:53:49.30 |
-18:14:49.7 |
HIP 33138 |
19.31 |
| 2026-09-29 00:00 |
06:53:49.48 |
-18:15:22.7 |
HIP 33138 |
18.76 |
| 2026-09-29 12:00 |
06:53:49.63 |
-18:15:55.6 |
HIP 33138 |
18.21 |
| 2026-09-30 00:00 |
06:53:49.75 |
-18:16:28.6 |
HIP 33138 |
17.67 |
| 2026-09-30 12:00 |
06:53:49.84 |
-18:17:01.6 |
HIP 33138 |
17.12 |
| 2026-10-01 00:00 |
06:53:49.89 |
-18:17:34.6 |
HIP 33138 |
16.58 |
| 2026-10-01 12:00 |
06:53:49.91 |
-18:18:07.6 |
HIP 33138 |
16.03 |
| 2026-10-02 00:00 |
06:53:49.90 |
-18:18:40.6 |
HIP 33138 |
15.49 |
| 2026-10-02 12:00 |
06:53:49.86 |
-18:19:13.6 |
HIP 33138 |
14.96 |
| 2026-10-03 00:00 |
06:53:49.78 |
-18:19:46.6 |
HIP 33138 |
14.42 |
| 2026-10-03 12:00 |
06:53:49.67 |
-18:20:19.6 |
HIP 33138 |
13.89 |
| 2026-10-04 00:00 |
06:53:49.52 |
-18:20:52.6 |
HIP 33138 |
13.36 |
| 2026-10-04 12:00 |
06:53:49.34 |
-18:21:25.5 |
HIP 33138 |
12.83 |
| 2026-10-05 00:00 |
06:53:49.13 |
-18:21:58.5 |
HIP 33138 |
12.31 |
| 2026-10-05 12:00 |
06:53:48.89 |
-18:22:31.4 |
HIP 33138 |
11.79 |
| 2026-10-06 00:00 |
06:53:48.61 |
-18:23:04.3 |
HIP 33138 |
11.28 |
| 2026-10-06 12:00 |
06:53:48.30 |
-18:23:37.2 |
HIP 33138 |
10.78 |
| 2026-10-07 00:00 |
06:53:47.96 |
-18:24:10.1 |
HIP 33138 |
10.29 |
| 2026-10-07 12:00 |
06:53:47.58 |
-18:24:43.0 |
HIP 33138 |
9.80 |
| 2026-10-08 00:00 |
06:53:47.17 |
-18:25:15.8 |
HIP 33138 |
9.33 |
| 2026-10-08 12:00 |
06:53:46.72 |
-18:25:48.6 |
HIP 33138 |
8.86 |
| 2026-10-09 00:00 |
06:53:46.24 |
-18:26:21.3 |
HIP 33138 |
8.42 |
| 2026-10-09 12:00 |
06:53:45.73 |
-18:26:54.0 |
HIP 33138 |
7.99 |
| 2026-10-10 00:00 |
06:53:45.18 |
-18:27:26.7 |
HIP 33138 |
7.59 |
| 2026-10-10 12:00 |
06:53:44.60 |
-18:27:59.3 |
HIP 33138 |
7.21 |
| 2026-10-11 00:00 |
06:53:43.99 |
-18:28:31.8 |
HIP 33138 |
6.86 |