メタデータ
| 項目 |
値 |
| Designation |
C/1937 C1 (Whipple) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1937-06-20T01:32:24.322560Z |
| Orbit solution date (soln_date, UTC) |
2024-02-20T20:16:47Z |
| Obs used |
53 |
| NEO |
- |
| M1 |
4.200 |
| K1 |
16.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1937-05-22.0000000 |
| e |
1.00016227 |
| q (au) |
1.733769 |
| a (au) |
-10684.390242 |
| i (deg) |
41.551722 |
| Ω (om, deg) |
128.608063 |
| ω (w, deg) |
107.736032 |
| M (ma, deg) |
-0.000026 |
等級
散乱 + 全体線形
$$
M_a = (4.940 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
4.940 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.526 |
| k |
0.800 |
| 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) |
| 2026-05-12 00:00 |
03:32:39.02 |
-23:24:00.3 |
HIP 16510 |
13.75 |
| 2026-05-12 12:00 |
03:32:40.17 |
-23:23:56.4 |
HIP 16510 |
13.83 |
| 2026-05-13 00:00 |
03:32:41.32 |
-23:23:52.6 |
HIP 16510 |
13.92 |
| 2026-05-13 12:00 |
03:32:42.47 |
-23:23:48.9 |
HIP 16510 |
14.01 |
| 2026-05-14 00:00 |
03:32:43.62 |
-23:23:45.3 |
HIP 16510 |
14.10 |
| 2026-05-14 12:00 |
03:32:44.77 |
-23:23:41.8 |
HIP 16510 |
14.19 |
| 2026-05-15 00:00 |
03:32:45.92 |
-23:23:38.4 |
HIP 16510 |
14.29 |
| 2026-05-15 12:00 |
03:32:47.07 |
-23:23:35.1 |
HIP 16510 |
14.39 |
| 2026-05-16 00:00 |
03:32:48.22 |
-23:23:31.9 |
HIP 16510 |
14.50 |
| 2026-05-16 12:00 |
03:32:49.37 |
-23:23:28.7 |
HIP 16510 |
14.60 |
| 2026-05-17 00:00 |
03:32:50.53 |
-23:23:25.7 |
HIP 16510 |
14.71 |
| 2026-05-17 12:00 |
03:32:51.68 |
-23:23:22.8 |
HIP 16510 |
14.82 |
| 2026-05-18 00:00 |
03:32:52.83 |
-23:23:19.9 |
HIP 16510 |
14.94 |
| 2026-05-18 12:00 |
03:32:53.98 |
-23:23:17.1 |
HIP 16510 |
15.05 |
| 2026-05-19 00:00 |
03:32:55.13 |
-23:23:14.5 |
HIP 16510 |
15.17 |
| 2026-05-19 12:00 |
03:32:56.28 |
-23:23:11.9 |
HIP 16510 |
15.30 |
| 2026-05-20 00:00 |
03:32:57.43 |
-23:23:09.4 |
HIP 16510 |
15.42 |
| 2026-05-20 12:00 |
03:32:58.58 |
-23:23:07.0 |
HIP 16510 |
15.54 |
| 2026-05-21 00:00 |
03:32:59.73 |
-23:23:04.7 |
HIP 16510 |
15.67 |
| 2026-05-21 12:00 |
03:33:00.87 |
-23:23:02.5 |
HIP 16510 |
15.80 |
| 2026-05-22 00:00 |
03:33:02.02 |
-23:23:00.4 |
HIP 16510 |
15.93 |
| 2026-05-22 12:00 |
03:33:03.17 |
-23:22:58.4 |
HIP 16510 |
16.07 |
| 2026-05-23 00:00 |
03:33:04.31 |
-23:22:56.4 |
HIP 16510 |
16.20 |
| 2026-05-23 12:00 |
03:33:05.46 |
-23:22:54.6 |
HIP 16510 |
16.34 |
| 2026-05-24 00:00 |
03:33:06.60 |
-23:22:52.9 |
HIP 16510 |
16.48 |
| 2026-05-24 12:00 |
03:33:07.74 |
-23:22:51.2 |
HIP 16510 |
16.62 |
| 2026-05-25 00:00 |
03:33:08.88 |
-23:22:49.7 |
HIP 16510 |
16.76 |
| 2026-05-25 12:00 |
03:33:10.02 |
-23:22:48.2 |
HIP 16510 |
16.90 |
| 2026-05-26 00:00 |
03:33:11.16 |
-23:22:46.9 |
HIP 16510 |
17.04 |
| 2026-05-26 12:00 |
03:33:12.30 |
-23:22:45.6 |
HIP 16510 |
17.19 |
| 2026-05-27 00:00 |
03:33:13.43 |
-23:22:44.4 |
HIP 16510 |
17.33 |
| 2026-05-27 12:00 |
03:33:14.56 |
-23:22:43.3 |
HIP 16510 |
17.48 |
| 2026-05-28 00:00 |
03:33:15.70 |
-23:22:42.3 |
HIP 16510 |
17.63 |
| 2026-05-28 12:00 |
03:33:16.83 |
-23:22:41.4 |
HIP 16510 |
17.78 |
| 2026-05-29 00:00 |
03:33:17.95 |
-23:22:40.6 |
HIP 16510 |
17.93 |
| 2026-05-29 12:00 |
03:33:19.08 |
-23:22:39.9 |
HIP 16510 |
18.08 |
| 2026-05-30 00:00 |
03:33:20.20 |
-23:22:39.3 |
HIP 16510 |
18.23 |
| 2026-05-30 12:00 |
03:33:21.32 |
-23:22:38.8 |
HIP 16510 |
18.39 |
| 2026-05-31 00:00 |
03:33:22.44 |
-23:22:38.4 |
HIP 16510 |
18.54 |
| 2026-05-31 12:00 |
03:33:23.56 |
-23:22:38.1 |
HIP 16510 |
18.70 |
| 2026-06-01 00:00 |
03:33:24.68 |
-23:22:37.8 |
HIP 16510 |
18.85 |
| 2026-06-01 12:00 |
03:33:25.79 |
-23:22:37.7 |
HIP 16510 |
19.01 |
| 2026-06-02 00:00 |
03:33:26.90 |
-23:22:37.6 |
HIP 16510 |
19.16 |