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) |
| 2026-09-20 00:00 |
06:50:37.24 |
-11:43:50.3 |
HIP 32758 |
17.69 |
| 2026-09-20 12:00 |
06:50:37.59 |
-11:44:03.1 |
HIP 32758 |
17.91 |
| 2026-09-21 00:00 |
06:50:37.94 |
-11:44:15.8 |
HIP 32758 |
18.13 |
| 2026-09-21 12:00 |
06:50:38.27 |
-11:44:28.7 |
HIP 32758 |
18.34 |
| 2026-09-22 00:00 |
06:50:38.59 |
-11:44:41.5 |
HIP 32758 |
18.56 |
| 2026-09-22 12:00 |
06:50:38.90 |
-11:44:54.3 |
HIP 32758 |
18.77 |
| 2026-09-23 00:00 |
06:50:39.19 |
-11:45:07.1 |
HIP 32758 |
18.98 |
| 2026-09-23 12:00 |
06:50:39.47 |
-11:45:20.0 |
HIP 32758 |
19.19 |
| 2026-09-24 00:00 |
06:50:39.74 |
-11:45:32.9 |
HIP 32758 |
19.40 |
| 2026-09-24 12:00 |
06:50:40.00 |
-11:45:45.7 |
HIP 32758 |
19.61 |
| 2026-09-25 00:00 |
06:50:40.24 |
-11:45:58.6 |
HIP 32758 |
19.81 |
| 2026-09-25 12:00 |
06:50:40.47 |
-11:46:11.5 |
HIP 32758 |
20.02 |
| 2026-09-26 00:00 |
06:50:40.69 |
-11:46:24.4 |
HIP 32758 |
20.22 |
| 2026-09-26 12:00 |
06:50:40.89 |
-11:46:37.3 |
HIP 32758 |
20.42 |
| 2026-09-27 00:00 |
06:50:41.08 |
-11:46:50.2 |
HIP 32758 |
20.62 |
| 2026-09-27 12:00 |
06:50:41.26 |
-11:47:03.1 |
HIP 32758 |
20.82 |
| 2026-09-28 00:00 |
06:50:41.43 |
-11:47:16.0 |
HIP 32758 |
21.01 |
| 2026-09-28 12:00 |
06:50:41.58 |
-11:47:28.9 |
HIP 32758 |
21.21 |
| 2026-09-29 00:00 |
06:50:41.72 |
-11:47:41.8 |
HIP 32758 |
21.40 |
| 2026-09-29 12:00 |
06:50:41.85 |
-11:47:54.7 |
HIP 32758 |
21.60 |
| 2026-09-30 00:00 |
06:50:41.97 |
-11:48:07.6 |
HIP 32758 |
21.79 |
| 2026-09-30 12:00 |
06:50:42.07 |
-11:48:20.6 |
HIP 32758 |
21.98 |
| 2026-10-01 00:00 |
06:50:42.16 |
-11:48:33.5 |
HIP 32758 |
22.16 |
| 2026-10-01 12:00 |
06:50:42.23 |
-11:48:46.4 |
HIP 32758 |
22.35 |
| 2026-10-02 00:00 |
06:50:42.30 |
-11:48:59.3 |
HIP 32758 |
22.54 |
| 2026-10-02 12:00 |
06:50:42.35 |
-11:49:12.2 |
HIP 32758 |
22.72 |
| 2026-10-03 00:00 |
06:50:42.38 |
-11:49:25.1 |
HIP 32758 |
22.91 |
| 2026-10-03 12:00 |
06:50:42.41 |
-11:49:37.9 |
HIP 32758 |
23.09 |
| 2026-10-04 00:00 |
06:50:42.42 |
-11:49:50.8 |
HIP 32758 |
23.27 |
| 2026-10-04 12:00 |
06:50:42.41 |
-11:50:03.7 |
HIP 32758 |
23.45 |
| 2026-10-05 00:00 |
06:50:42.40 |
-11:50:16.5 |
HIP 32758 |
23.62 |
| 2026-10-05 12:00 |
06:50:42.37 |
-11:50:29.4 |
HIP 32758 |
23.80 |
| 2026-10-06 00:00 |
06:50:42.33 |
-11:50:42.2 |
HIP 32758 |
23.98 |
| 2026-10-06 12:00 |
06:50:42.27 |
-11:50:55.0 |
HIP 32758 |
24.15 |
| 2026-10-07 00:00 |
06:50:42.20 |
-11:51:07.8 |
HIP 32758 |
24.32 |
| 2026-10-07 12:00 |
06:50:42.12 |
-11:51:20.6 |
HIP 32758 |
24.49 |
| 2026-10-08 00:00 |
06:50:42.02 |
-11:51:33.4 |
HIP 32758 |
24.66 |
| 2026-10-08 12:00 |
06:50:41.91 |
-11:51:46.2 |
HIP 32758 |
24.83 |
| 2026-10-09 00:00 |
06:50:41.79 |
-11:51:58.9 |
HIP 32758 |
25.00 |
| 2026-10-09 12:00 |
06:50:41.66 |
-11:52:11.6 |
HIP 32758 |
25.17 |
| 2026-10-10 00:00 |
06:50:41.51 |
-11:52:24.3 |
HIP 32758 |
25.33 |
| 2026-10-10 12:00 |
06:50:41.35 |
-11:52:37.0 |
HIP 32758 |
25.50 |
| 2026-10-11 00:00 |
06:50:41.17 |
-11:52:49.7 |
HIP 32758 |
25.66 |