メタデータ
| 項目 |
値 |
| Designation |
C/1970 K1 (White-Ortiz-Bolelli) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1970-05-14T11:32:18.864960Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:19Z |
| Obs used |
9 |
| 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) |
1970-05-29.0000000 |
| e |
0.99994911 |
| q (au) |
0.008844 |
| a (au) |
173.786769 |
| i (deg) |
138.952249 |
| Ω (om, deg) |
336.819676 |
| ω (w, deg) |
61.102946 |
| M (ma, deg) |
0.006246 |
等級
散乱 + 全体線形
$$
M_a = (7.051 + 4.003\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
7.051 |
| n |
4.003 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
1.000 |
| 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) |
| 2026-05-12 00:00 |
06:45:27.38 |
-11:28:40.0 |
HIP 32344 |
6.45 |
| 2026-05-12 12:00 |
06:45:28.35 |
-11:28:31.3 |
HIP 32344 |
6.56 |
| 2026-05-13 00:00 |
06:45:29.33 |
-11:28:22.6 |
HIP 32344 |
6.68 |
| 2026-05-13 12:00 |
06:45:30.32 |
-11:28:14.1 |
HIP 32344 |
6.81 |
| 2026-05-14 00:00 |
06:45:31.32 |
-11:28:05.6 |
HIP 32344 |
6.96 |
| 2026-05-14 12:00 |
06:45:32.33 |
-11:27:57.2 |
HIP 32344 |
7.11 |
| 2026-05-15 00:00 |
06:45:33.35 |
-11:27:48.8 |
HIP 32344 |
7.28 |
| 2026-05-15 12:00 |
06:45:34.37 |
-11:27:40.6 |
HIP 32344 |
7.45 |
| 2026-05-16 00:00 |
06:45:35.41 |
-11:27:32.5 |
HIP 32344 |
7.64 |
| 2026-05-16 12:00 |
06:45:36.46 |
-11:27:24.4 |
HIP 32344 |
7.83 |
| 2026-05-17 00:00 |
06:45:37.51 |
-11:27:16.4 |
HIP 32344 |
8.04 |
| 2026-05-17 12:00 |
06:45:38.58 |
-11:27:08.5 |
HIP 32344 |
8.25 |
| 2026-05-18 00:00 |
06:45:39.65 |
-11:27:00.7 |
HIP 32344 |
8.46 |
| 2026-05-18 12:00 |
06:45:40.73 |
-11:26:53.0 |
HIP 32344 |
8.69 |
| 2026-05-19 00:00 |
06:45:41.82 |
-11:26:45.4 |
HIP 32344 |
8.92 |
| 2026-05-19 12:00 |
06:45:42.92 |
-11:26:37.8 |
HIP 32344 |
9.16 |
| 2026-05-20 00:00 |
06:45:44.03 |
-11:26:30.4 |
HIP 32344 |
9.40 |
| 2026-05-20 12:00 |
06:45:45.14 |
-11:26:23.0 |
HIP 32344 |
9.65 |
| 2026-05-21 00:00 |
06:45:46.27 |
-11:26:15.7 |
HIP 32344 |
9.90 |
| 2026-05-21 12:00 |
06:45:47.40 |
-11:26:08.5 |
HIP 32344 |
10.16 |
| 2026-05-22 00:00 |
06:45:48.54 |
-11:26:01.4 |
HIP 32344 |
10.42 |
| 2026-05-22 12:00 |
06:45:49.69 |
-11:25:54.4 |
HIP 32344 |
10.69 |
| 2026-05-23 00:00 |
06:45:50.85 |
-11:25:47.5 |
HIP 32344 |
10.96 |
| 2026-05-23 12:00 |
06:45:52.01 |
-11:25:40.7 |
HIP 32344 |
11.23 |
| 2026-05-24 00:00 |
06:45:53.18 |
-11:25:34.0 |
HIP 32344 |
11.51 |
| 2026-05-24 12:00 |
06:45:54.36 |
-11:25:27.4 |
HIP 32344 |
11.79 |
| 2026-05-25 00:00 |
06:45:55.55 |
-11:25:20.8 |
HIP 32344 |
12.08 |
| 2026-05-25 12:00 |
06:45:56.74 |
-11:25:14.4 |
HIP 32344 |
12.36 |
| 2026-05-26 00:00 |
06:45:57.94 |
-11:25:08.0 |
HIP 32344 |
12.66 |
| 2026-05-26 12:00 |
06:45:59.15 |
-11:25:01.7 |
HIP 32344 |
12.95 |
| 2026-05-27 00:00 |
06:46:00.37 |
-11:24:55.6 |
HIP 32344 |
13.25 |
| 2026-05-27 12:00 |
06:46:01.59 |
-11:24:49.5 |
HIP 32344 |
13.55 |
| 2026-05-28 00:00 |
06:46:02.82 |
-11:24:43.5 |
HIP 32344 |
13.85 |
| 2026-05-28 12:00 |
06:46:04.06 |
-11:24:37.7 |
HIP 32344 |
14.15 |
| 2026-05-29 00:00 |
06:46:05.30 |
-11:24:31.9 |
HIP 32344 |
14.46 |
| 2026-05-29 12:00 |
06:46:06.55 |
-11:24:26.2 |
HIP 32344 |
14.77 |
| 2026-05-30 00:00 |
06:46:07.81 |
-11:24:20.6 |
HIP 32344 |
15.08 |
| 2026-05-30 12:00 |
06:46:09.07 |
-11:24:15.1 |
HIP 32344 |
15.39 |
| 2026-05-31 00:00 |
06:46:10.34 |
-11:24:09.7 |
HIP 32344 |
15.70 |
| 2026-05-31 12:00 |
06:46:11.62 |
-11:24:04.4 |
HIP 32344 |
16.02 |
| 2026-06-01 00:00 |
06:46:12.90 |
-11:23:59.2 |
HIP 32344 |
16.34 |
| 2026-06-01 12:00 |
06:46:14.19 |
-11:23:54.1 |
HIP 32344 |
16.66 |
| 2026-06-02 00:00 |
06:46:15.49 |
-11:23:49.0 |
HIP 32344 |
16.98 |