C/1924 R1 (Finsler)
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) |
| 2026-02-03 00:00 |
12:41:31.73 |
-59:18:11.1 |
HIP 61808 |
20.50 |
| 2026-02-03 12:00 |
12:41:30.72 |
-59:18:20.0 |
HIP 61808 |
20.31 |
| 2026-02-04 00:00 |
12:41:29.69 |
-59:18:28.7 |
HIP 61808 |
20.12 |
| 2026-02-04 12:00 |
12:41:28.65 |
-59:18:37.4 |
HIP 61808 |
19.92 |
| 2026-02-05 00:00 |
12:41:27.60 |
-59:18:46.0 |
HIP 61808 |
19.73 |
| 2026-02-05 12:00 |
12:41:26.53 |
-59:18:54.5 |
HIP 61808 |
19.53 |
| 2026-02-06 00:00 |
12:41:25.45 |
-59:19:03.0 |
HIP 61808 |
19.34 |
| 2026-02-06 12:00 |
12:41:24.36 |
-59:19:11.3 |
HIP 61808 |
19.15 |
| 2026-02-07 00:00 |
12:41:23.25 |
-59:19:19.6 |
HIP 61808 |
18.96 |
| 2026-02-07 12:00 |
12:41:22.13 |
-59:19:27.7 |
HIP 61808 |
18.76 |
| 2026-02-08 00:00 |
12:41:20.99 |
-59:19:35.8 |
HIP 61808 |
18.57 |
| 2026-02-08 12:00 |
12:41:19.84 |
-59:19:43.8 |
HIP 61808 |
18.38 |
| 2026-02-09 00:00 |
12:41:18.68 |
-59:19:51.6 |
HIP 61808 |
18.19 |
| 2026-02-09 12:00 |
12:41:17.51 |
-59:19:59.4 |
HIP 61808 |
18.00 |
| 2026-02-10 00:00 |
12:41:16.32 |
-59:20:07.1 |
HIP 61808 |
17.81 |
| 2026-02-10 12:00 |
12:41:15.12 |
-59:20:14.7 |
HIP 61808 |
17.62 |
| 2026-02-11 00:00 |
12:41:13.91 |
-59:20:22.2 |
HIP 61808 |
17.44 |
| 2026-02-11 12:00 |
12:41:12.68 |
-59:20:29.7 |
HIP 61808 |
17.25 |
| 2026-02-12 00:00 |
12:41:11.45 |
-59:20:37.0 |
HIP 61808 |
17.06 |
| 2026-02-12 12:00 |
12:41:10.20 |
-59:20:44.2 |
HIP 61808 |
16.88 |
| 2026-02-13 00:00 |
12:41:08.93 |
-59:20:51.3 |
HIP 61808 |
16.69 |
| 2026-02-13 12:00 |
12:41:07.66 |
-59:20:58.3 |
HIP 61808 |
16.51 |
| 2026-02-14 00:00 |
12:41:06.37 |
-59:21:05.3 |
HIP 61808 |
16.33 |
| 2026-02-14 12:00 |
12:41:05.07 |
-59:21:12.1 |
HIP 61808 |
16.15 |
| 2026-02-15 00:00 |
12:41:03.76 |
-59:21:18.8 |
HIP 61808 |
15.97 |
| 2026-02-15 12:00 |
12:41:02.44 |
-59:21:25.5 |
HIP 61808 |
15.79 |
| 2026-02-16 00:00 |
12:41:01.11 |
-59:21:32.0 |
HIP 61808 |
15.61 |
| 2026-02-16 12:00 |
12:40:59.76 |
-59:21:38.4 |
HIP 61808 |
15.43 |
| 2026-02-17 00:00 |
12:40:58.40 |
-59:21:44.7 |
HIP 61808 |
15.26 |
| 2026-02-17 12:00 |
12:40:57.03 |
-59:21:51.0 |
HIP 61808 |
15.08 |
| 2026-02-18 00:00 |
12:40:55.65 |
-59:21:57.1 |
HIP 61808 |
14.91 |
| 2026-02-18 12:00 |
12:40:54.26 |
-59:22:03.1 |
HIP 61808 |
14.74 |
| 2026-02-19 00:00 |
12:40:52.86 |
-59:22:09.0 |
HIP 61808 |
14.57 |
| 2026-02-19 12:00 |
12:40:51.44 |
-59:22:14.8 |
HIP 61808 |
14.41 |
| 2026-02-20 00:00 |
12:40:50.02 |
-59:22:20.5 |
HIP 61808 |
14.24 |
| 2026-02-20 12:00 |
12:40:48.58 |
-59:22:26.1 |
HIP 61808 |
14.08 |
| 2026-02-21 00:00 |
12:40:47.14 |
-59:22:31.6 |
HIP 61808 |
13.92 |
| 2026-02-21 12:00 |
12:40:45.68 |
-59:22:37.0 |
HIP 61808 |
13.76 |
| 2026-02-22 00:00 |
12:40:44.21 |
-59:22:42.3 |
HIP 61808 |
13.61 |
| 2026-02-22 12:00 |
12:40:42.74 |
-59:22:47.5 |
HIP 61808 |
13.45 |
| 2026-02-23 00:00 |
12:40:41.25 |
-59:22:52.6 |
HIP 61808 |
13.30 |
| 2026-02-23 12:00 |
12:40:39.75 |
-59:22:57.5 |
HIP 61808 |
13.15 |
| 2026-02-24 00:00 |
12:40:38.25 |
-59:23:02.4 |
HIP 61808 |
13.01 |