メタデータ
| 項目 |
値 |
| Designation |
C/2024 V2 (Sarneczky) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2024-11-03T19:07:47.573760Z |
| Orbit solution date (soln_date, UTC) |
2024-12-26T20:12:37Z |
| Obs used |
58 |
| NEO |
- |
| M1 |
15.100 |
| K1 |
47.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-11-10T02:20:07.584000Z |
| Discovery magnitude (MPC) |
19.80 G |
| Discovery observatory (MPC) |
K88 · GINOP-KHK, Piszkéstető |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2024-11-16.0000000 |
| e |
0.96679404 |
| q (au) |
1.242723 |
| a (au) |
37.424696 |
| i (deg) |
95.966210 |
| Ω (om, deg) |
102.188455 |
| ω (w, deg) |
13.688779 |
| M (ma, deg) |
0.052533 |
等級
散乱 + 全体線形
$$
M_a = (17.641 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
17.641 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
1.000 |
| 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 |
19:27:27.43 |
+18:32:11.7 |
HIP 95657 |
14.44 |
| 2026-05-12 12:00 |
19:27:15.30 |
+18:33:17.3 |
HIP 95657 |
15.76 |
| 2026-05-13 00:00 |
19:27:03.00 |
+18:34:21.7 |
HIP 95617 |
16.34 |
| 2026-05-13 12:00 |
19:26:50.55 |
+18:35:25.1 |
HIP 95617 |
17.30 |
| 2026-05-14 00:00 |
19:26:37.93 |
+18:36:27.3 |
HIP 95617 |
18.74 |
| 2026-05-14 12:00 |
19:26:25.15 |
+18:37:28.3 |
HIP 95455 |
19.44 |
| 2026-05-15 00:00 |
19:26:12.21 |
+18:38:28.2 |
HIP 95455 |
16.32 |
| 2026-05-15 12:00 |
19:25:59.11 |
+18:39:26.9 |
HIP 95455 |
13.22 |
| 2026-05-16 00:00 |
19:25:45.85 |
+18:40:24.4 |
HIP 95455 |
10.17 |
| 2026-05-16 12:00 |
19:25:32.43 |
+18:41:20.8 |
HIP 95455 |
7.28 |
| 2026-05-17 00:00 |
19:25:18.86 |
+18:42:15.8 |
HIP 95455 |
4.92 |
| 2026-05-17 12:00 |
19:25:05.14 |
+18:43:09.7 |
HIP 95455 |
4.19 |
| 2026-05-18 00:00 |
19:24:51.26 |
+18:44:02.3 |
HIP 95455 |
5.80 |
| 2026-05-18 12:00 |
19:24:37.22 |
+18:44:53.6 |
HIP 95384 |
5.82 |
| 2026-05-19 00:00 |
19:24:23.04 |
+18:45:43.7 |
HIP 95384 |
2.75 |
| 2026-05-19 12:00 |
19:24:08.70 |
+18:46:32.4 |
HIP 95384 |
2.27 |
| 2026-05-20 00:00 |
19:23:54.22 |
+18:47:19.9 |
HIP 95384 |
5.23 |
| 2026-05-20 12:00 |
19:23:39.59 |
+18:48:06.0 |
HIP 95384 |
8.64 |
| 2026-05-21 00:00 |
19:23:24.81 |
+18:48:50.8 |
HIP 95384 |
12.15 |
| 2026-05-21 12:00 |
19:23:09.89 |
+18:49:34.3 |
HIP 95384 |
15.72 |
| 2026-05-22 00:00 |
19:22:54.82 |
+18:50:16.4 |
HIP 95384 |
19.32 |
| 2026-05-22 12:00 |
19:22:39.61 |
+18:50:57.1 |
HIP 95384 |
22.96 |
| 2026-05-23 00:00 |
19:22:24.26 |
+18:51:36.4 |
HIP 95116 |
26.29 |
| 2026-05-23 12:00 |
19:22:08.77 |
+18:52:14.4 |
HIP 95078 |
22.85 |
| 2026-05-24 00:00 |
19:21:53.14 |
+18:52:50.9 |
HIP 95078 |
19.20 |
| 2026-05-24 12:00 |
19:21:37.38 |
+18:53:26.1 |
HIP 95078 |
15.57 |
| 2026-05-25 00:00 |
19:21:21.48 |
+18:53:59.8 |
HIP 95078 |
12.03 |
| 2026-05-25 12:00 |
19:21:05.44 |
+18:54:32.0 |
HIP 95078 |
8.70 |
| 2026-05-26 00:00 |
19:20:49.27 |
+18:55:02.9 |
HIP 95078 |
6.00 |
| 2026-05-26 12:00 |
19:20:32.97 |
+18:55:32.2 |
HIP 95078 |
5.15 |
| 2026-05-27 00:00 |
19:20:16.55 |
+18:56:00.1 |
HIP 95078 |
6.91 |
| 2026-05-27 12:00 |
19:19:59.99 |
+18:56:26.5 |
HIP 95078 |
10.01 |
| 2026-05-28 00:00 |
19:19:43.30 |
+18:56:51.4 |
HIP 95078 |
13.59 |
| 2026-05-28 12:00 |
19:19:26.49 |
+18:57:14.9 |
HIP 94935 |
12.35 |
| 2026-05-29 00:00 |
19:19:09.56 |
+18:57:36.8 |
HIP 94935 |
11.59 |
| 2026-05-29 12:00 |
19:18:52.50 |
+18:57:57.2 |
HIP 94935 |
12.17 |
| 2026-05-30 00:00 |
19:18:35.33 |
+18:58:16.1 |
HIP 94837 |
13.01 |
| 2026-05-30 12:00 |
19:18:18.03 |
+18:58:33.4 |
HIP 94837 |
10.13 |
| 2026-05-31 00:00 |
19:18:00.61 |
+18:58:49.2 |
HIP 94837 |
8.30 |
| 2026-05-31 12:00 |
19:17:43.08 |
+18:59:03.4 |
HIP 94837 |
8.30 |
| 2026-06-01 00:00 |
19:17:25.44 |
+18:59:16.1 |
HIP 94751 |
8.74 |
| 2026-06-01 12:00 |
19:17:07.68 |
+18:59:27.1 |
HIP 94751 |
4.60 |
| 2026-06-02 00:00 |
19:16:49.81 |
+18:59:36.6 |
HIP 94751 |
1.06 |