C/2024 V1 (Borisov)
メタデータ
| 項目 |
値 |
| Designation |
C/2024 V1 (Borisov) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-04-04T02:28:15.268800Z |
| Orbit solution date (soln_date, UTC) |
2025-06-26T10:13:10Z |
| Obs used |
422 |
| NEO |
- |
| M1 |
13.600 |
| K1 |
9.250 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-11-08T01:11:04.704000Z |
| Discovery magnitude (MPC) |
19.30 G |
| Discovery observatory (MPC) |
L51 · MARGO, Nauchnyi |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2025-02-14.0000000 |
| e |
0.99016034 |
| q (au) |
2.318468 |
| a (au) |
235.624767 |
| i (deg) |
54.623265 |
| Ω (om, deg) |
328.195162 |
| ω (w, deg) |
168.663803 |
| M (ma, deg) |
359.986619 |
等級
散乱 + 全体線形
$$
M_a = (14.076 + 4.289\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
14.076 |
| n |
4.289 |
| gf |
1.000 |
| gb |
-0.585 |
| 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) |
| 2026-02-03 00:00 |
13:00:23.17 |
-63:58:20.4 |
HIP 63470 |
15.01 |
| 2026-02-03 12:00 |
13:00:11.77 |
-64:05:50.8 |
HIP 63470 |
7.56 |
| 2026-02-04 00:00 |
12:59:59.77 |
-64:13:19.0 |
HIP 63470 |
2.24 |
| 2026-02-04 12:00 |
12:59:47.17 |
-64:20:44.9 |
HIP 63411 |
1.85 |
| 2026-02-05 00:00 |
12:59:33.95 |
-64:28:08.6 |
HIP 63411 |
5.88 |
| 2026-02-05 12:00 |
12:59:20.12 |
-64:35:29.9 |
HIP 63411 |
13.35 |
| 2026-02-06 00:00 |
12:59:05.66 |
-64:42:48.9 |
HIP 63411 |
20.82 |
| 2026-02-06 12:00 |
12:58:50.57 |
-64:50:05.5 |
HIP 63681 |
26.96 |
| 2026-02-07 00:00 |
12:58:34.85 |
-64:57:19.6 |
HIP 63681 |
30.20 |
| 2026-02-07 12:00 |
12:58:18.50 |
-65:04:31.3 |
HIP 63242 |
34.61 |
| 2026-02-08 00:00 |
12:58:01.49 |
-65:11:40.5 |
HIP 63242 |
27.29 |
| 2026-02-08 12:00 |
12:57:43.84 |
-65:18:47.1 |
HIP 63242 |
20.04 |
| 2026-02-09 00:00 |
12:57:25.54 |
-65:25:51.2 |
HIP 63242 |
12.96 |
| 2026-02-09 12:00 |
12:57:06.57 |
-65:32:52.6 |
HIP 63242 |
6.47 |
| 2026-02-10 00:00 |
12:56:46.94 |
-65:39:51.4 |
HIP 63242 |
4.77 |
| 2026-02-10 12:00 |
12:56:26.65 |
-65:46:47.5 |
HIP 63021 |
10.01 |
| 2026-02-11 00:00 |
12:56:05.68 |
-65:53:40.8 |
HIP 63021 |
8.38 |
| 2026-02-11 12:00 |
12:55:44.04 |
-66:00:31.3 |
HIP 63035 |
4.61 |
| 2026-02-12 00:00 |
12:55:21.71 |
-66:07:19.1 |
HIP 63035 |
6.21 |
| 2026-02-12 12:00 |
12:54:58.70 |
-66:14:03.9 |
HIP 63035 |
12.55 |
| 2026-02-13 00:00 |
12:54:35.00 |
-66:20:45.9 |
HIP 63035 |
19.41 |
| 2026-02-13 12:00 |
12:54:10.61 |
-66:27:24.9 |
HIP 63035 |
26.37 |
| 2026-02-14 00:00 |
12:53:45.52 |
-66:34:00.9 |
HIP 62588 |
25.29 |
| 2026-02-14 12:00 |
12:53:19.74 |
-66:40:33.8 |
HIP 62588 |
23.26 |
| 2026-02-15 00:00 |
12:52:53.25 |
-66:47:03.7 |
HIP 62588 |
23.20 |
| 2026-02-15 12:00 |
12:52:26.05 |
-66:53:30.5 |
HIP 62588 |
25.10 |
| 2026-02-16 00:00 |
12:51:58.15 |
-66:59:54.1 |
HIP 62488 |
22.80 |
| 2026-02-16 12:00 |
12:51:29.54 |
-67:06:14.5 |
HIP 62488 |
18.60 |
| 2026-02-17 00:00 |
12:51:00.21 |
-67:12:31.7 |
HIP 62488 |
16.31 |
| 2026-02-17 12:00 |
12:50:30.17 |
-67:18:45.6 |
HIP 62488 |
16.71 |
| 2026-02-18 00:00 |
12:49:59.41 |
-67:24:56.1 |
HIP 62488 |
19.60 |
| 2026-02-18 12:00 |
12:49:27.94 |
-67:31:03.3 |
HIP 62488 |
24.09 |
| 2026-02-19 00:00 |
12:48:55.75 |
-67:37:07.0 |
HIP 62117 |
29.06 |
| 2026-02-19 12:00 |
12:48:22.83 |
-67:43:07.2 |
HIP 62677 |
25.62 |
| 2026-02-20 00:00 |
12:47:49.20 |
-67:49:04.0 |
HIP 62322 |
19.45 |
| 2026-02-20 12:00 |
12:47:14.85 |
-67:54:57.2 |
HIP 62322 |
12.75 |
| 2026-02-21 00:00 |
12:46:39.77 |
-68:00:46.8 |
HIP 62322 |
6.09 |
| 2026-02-21 12:00 |
12:46:03.98 |
-68:06:32.7 |
HIP 62322 |
1.20 |
| 2026-02-22 00:00 |
12:45:27.47 |
-68:12:15.0 |
HIP 62322 |
7.37 |
| 2026-02-22 12:00 |
12:44:50.24 |
-68:17:53.6 |
HIP 62322 |
13.96 |
| 2026-02-23 00:00 |
12:44:12.29 |
-68:23:28.4 |
HIP 62322 |
20.54 |
| 2026-02-23 12:00 |
12:43:33.62 |
-68:28:59.4 |
HIP 62212 |
22.35 |
| 2026-02-24 00:00 |
12:42:54.25 |
-68:34:26.5 |
HIP 62212 |
19.29 |