メタデータ
| 項目 |
値 |
| Designation |
C/1924 R1 (Finsler) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1924-09-04T19:45:38.554560Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:02Z |
| Obs used |
8 |
| 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) |
1924-09-28.0000000 |
| e |
0.99853004 |
| q (au) |
0.405911 |
| a (au) |
276.136968 |
| i (deg) |
120.113818 |
| Ω (om, deg) |
81.148388 |
| ω (w, deg) |
66.501893 |
| M (ma, deg) |
0.004978 |
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) |
| 2026-05-12 00:00 |
12:36:12.33 |
-59:13:54.3 |
HIP 61332 |
16.81 |
| 2026-05-12 12:00 |
12:36:10.93 |
-59:13:43.6 |
HIP 61332 |
16.65 |
| 2026-05-13 00:00 |
12:36:09.55 |
-59:13:32.8 |
HIP 61332 |
16.50 |
| 2026-05-13 12:00 |
12:36:08.17 |
-59:13:22.0 |
HIP 61332 |
16.35 |
| 2026-05-14 00:00 |
12:36:06.80 |
-59:13:11.1 |
HIP 61332 |
16.20 |
| 2026-05-14 12:00 |
12:36:05.45 |
-59:13:00.1 |
HIP 61332 |
16.05 |
| 2026-05-15 00:00 |
12:36:04.10 |
-59:12:49.1 |
HIP 61332 |
15.91 |
| 2026-05-15 12:00 |
12:36:02.77 |
-59:12:38.0 |
HIP 61332 |
15.78 |
| 2026-05-16 00:00 |
12:36:01.44 |
-59:12:26.9 |
HIP 61332 |
15.65 |
| 2026-05-16 12:00 |
12:36:00.13 |
-59:12:15.7 |
HIP 61332 |
15.52 |
| 2026-05-17 00:00 |
12:35:58.83 |
-59:12:04.4 |
HIP 61332 |
15.40 |
| 2026-05-17 12:00 |
12:35:57.54 |
-59:11:53.1 |
HIP 61332 |
15.28 |
| 2026-05-18 00:00 |
12:35:56.27 |
-59:11:41.8 |
HIP 61332 |
15.17 |
| 2026-05-18 12:00 |
12:35:55.00 |
-59:11:30.4 |
HIP 61332 |
15.06 |
| 2026-05-19 00:00 |
12:35:53.75 |
-59:11:18.9 |
HIP 61332 |
14.96 |
| 2026-05-19 12:00 |
12:35:52.50 |
-59:11:07.4 |
HIP 61332 |
14.86 |
| 2026-05-20 00:00 |
12:35:51.27 |
-59:10:55.9 |
HIP 61332 |
14.77 |
| 2026-05-20 12:00 |
12:35:50.06 |
-59:10:44.3 |
HIP 61332 |
14.69 |
| 2026-05-21 00:00 |
12:35:48.85 |
-59:10:32.6 |
HIP 61332 |
14.61 |
| 2026-05-21 12:00 |
12:35:47.66 |
-59:10:20.9 |
HIP 61332 |
14.53 |
| 2026-05-22 00:00 |
12:35:46.48 |
-59:10:09.2 |
HIP 61332 |
14.46 |
| 2026-05-22 12:00 |
12:35:45.31 |
-59:09:57.4 |
HIP 61332 |
14.40 |
| 2026-05-23 00:00 |
12:35:44.15 |
-59:09:45.6 |
HIP 61332 |
14.34 |
| 2026-05-23 12:00 |
12:35:43.01 |
-59:09:33.7 |
HIP 61332 |
14.28 |
| 2026-05-24 00:00 |
12:35:41.87 |
-59:09:21.8 |
HIP 61332 |
14.24 |
| 2026-05-24 12:00 |
12:35:40.76 |
-59:09:09.9 |
HIP 61332 |
14.20 |
| 2026-05-25 00:00 |
12:35:39.65 |
-59:08:57.9 |
HIP 61332 |
14.16 |
| 2026-05-25 12:00 |
12:35:38.55 |
-59:08:45.9 |
HIP 61332 |
14.13 |
| 2026-05-26 00:00 |
12:35:37.47 |
-59:08:33.8 |
HIP 61332 |
14.11 |
| 2026-05-26 12:00 |
12:35:36.41 |
-59:08:21.7 |
HIP 61332 |
14.09 |
| 2026-05-27 00:00 |
12:35:35.35 |
-59:08:09.6 |
HIP 61332 |
14.08 |
| 2026-05-27 12:00 |
12:35:34.31 |
-59:07:57.4 |
HIP 61332 |
14.07 |
| 2026-05-28 00:00 |
12:35:33.28 |
-59:07:45.2 |
HIP 61332 |
14.07 |
| 2026-05-28 12:00 |
12:35:32.26 |
-59:07:32.9 |
HIP 61332 |
14.08 |
| 2026-05-29 00:00 |
12:35:31.26 |
-59:07:20.7 |
HIP 61332 |
14.09 |
| 2026-05-29 12:00 |
12:35:30.27 |
-59:07:08.4 |
HIP 61332 |
14.11 |
| 2026-05-30 00:00 |
12:35:29.29 |
-59:06:56.0 |
HIP 61312 |
14.11 |
| 2026-05-30 12:00 |
12:35:28.33 |
-59:06:43.7 |
HIP 61312 |
13.98 |
| 2026-05-31 00:00 |
12:35:27.38 |
-59:06:31.3 |
HIP 61312 |
13.86 |
| 2026-05-31 12:00 |
12:35:26.44 |
-59:06:18.8 |
HIP 61312 |
13.75 |
| 2026-06-01 00:00 |
12:35:25.52 |
-59:06:06.4 |
HIP 61312 |
13.64 |
| 2026-06-01 12:00 |
12:35:24.61 |
-59:05:53.9 |
HIP 61312 |
13.54 |
| 2026-06-02 00:00 |
12:35:23.71 |
-59:05:41.4 |
HIP 61312 |
13.44 |