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 |
-0.895 |
| 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) |
| 2026-07-29 00:00 |
18:39:17.91 |
+16:14:00.3 |
HIP 91542 |
19.92 |
| 2026-07-29 12:00 |
18:39:00.96 |
+16:11:08.2 |
HIP 91413 |
22.10 |
| 2026-07-30 00:00 |
18:38:44.13 |
+16:08:15.0 |
HIP 91279 |
23.12 |
| 2026-07-30 12:00 |
18:38:27.42 |
+16:05:20.9 |
HIP 91279 |
19.92 |
| 2026-07-31 00:00 |
18:38:10.83 |
+16:02:25.8 |
HIP 91279 |
17.60 |
| 2026-07-31 12:00 |
18:37:54.36 |
+15:59:29.8 |
HIP 91279 |
16.50 |
| 2026-08-01 00:00 |
18:37:38.02 |
+15:56:32.7 |
HIP 91279 |
16.85 |
| 2026-08-01 12:00 |
18:37:21.81 |
+15:53:34.8 |
HIP 91279 |
18.57 |
| 2026-08-02 00:00 |
18:37:05.72 |
+15:50:35.9 |
HIP 91279 |
21.31 |
| 2026-08-02 12:00 |
18:36:49.76 |
+15:47:36.2 |
HIP 91247 |
20.80 |
| 2026-08-03 00:00 |
18:36:33.93 |
+15:44:35.5 |
HIP 91247 |
17.82 |
| 2026-08-03 12:00 |
18:36:18.23 |
+15:41:34.0 |
HIP 91247 |
15.77 |
| 2026-08-04 00:00 |
18:36:02.66 |
+15:38:31.6 |
HIP 91138 |
13.43 |
| 2026-08-04 12:00 |
18:35:47.22 |
+15:35:28.4 |
HIP 91138 |
8.79 |
| 2026-08-05 00:00 |
18:35:31.91 |
+15:32:24.4 |
HIP 91138 |
4.51 |
| 2026-08-05 12:00 |
18:35:16.74 |
+15:29:19.6 |
HIP 91138 |
3.04 |
| 2026-08-06 00:00 |
18:35:01.70 |
+15:26:13.9 |
HIP 91138 |
6.59 |
| 2026-08-06 12:00 |
18:34:46.81 |
+15:23:07.5 |
HIP 91071 |
9.80 |
| 2026-08-07 00:00 |
18:34:32.04 |
+15:20:00.4 |
HIP 91071 |
6.29 |
| 2026-08-07 12:00 |
18:34:17.42 |
+15:16:52.5 |
HIP 91071 |
5.24 |
| 2026-08-08 00:00 |
18:34:02.94 |
+15:13:43.8 |
HIP 91071 |
7.71 |
| 2026-08-08 12:00 |
18:33:48.59 |
+15:10:34.5 |
HIP 91071 |
11.61 |
| 2026-08-09 00:00 |
18:33:34.39 |
+15:07:24.4 |
HIP 91071 |
15.92 |
| 2026-08-09 12:00 |
18:33:20.33 |
+15:04:13.7 |
HIP 91071 |
20.36 |
| 2026-08-10 00:00 |
18:33:06.42 |
+15:01:02.4 |
HIP 91071 |
24.85 |
| 2026-08-10 12:00 |
18:32:52.65 |
+14:57:50.3 |
HIP 91071 |
29.37 |
| 2026-08-11 00:00 |
18:32:39.02 |
+14:54:37.7 |
HIP 91092 |
33.69 |
| 2026-08-11 12:00 |
18:32:25.54 |
+14:51:24.5 |
HIP 91034 |
35.07 |
| 2026-08-12 00:00 |
18:32:12.21 |
+14:48:10.6 |
HIP 90803 |
32.86 |
| 2026-08-12 12:00 |
18:31:59.02 |
+14:44:56.2 |
HIP 90803 |
28.78 |
| 2026-08-13 00:00 |
18:31:45.99 |
+14:41:41.3 |
HIP 90803 |
24.85 |
| 2026-08-13 12:00 |
18:31:33.10 |
+14:38:25.8 |
HIP 90803 |
21.16 |
| 2026-08-14 00:00 |
18:31:20.36 |
+14:35:09.8 |
HIP 90803 |
17.84 |
| 2026-08-14 12:00 |
18:31:07.78 |
+14:31:53.2 |
HIP 90803 |
15.13 |
| 2026-08-15 00:00 |
18:30:55.34 |
+14:28:36.2 |
HIP 90803 |
13.36 |
| 2026-08-15 12:00 |
18:30:43.06 |
+14:25:18.8 |
HIP 90803 |
12.93 |
| 2026-08-16 00:00 |
18:30:30.93 |
+14:22:00.9 |
HIP 90803 |
13.93 |
| 2026-08-16 12:00 |
18:30:18.96 |
+14:18:42.5 |
HIP 90803 |
16.09 |
| 2026-08-17 00:00 |
18:30:07.13 |
+14:15:23.8 |
HIP 90803 |
19.00 |
| 2026-08-17 12:00 |
18:29:55.47 |
+14:12:04.6 |
HIP 90618 |
21.86 |
| 2026-08-18 00:00 |
18:29:43.95 |
+14:08:45.1 |
HIP 90618 |
17.90 |
| 2026-08-18 12:00 |
18:29:32.59 |
+14:05:25.2 |
HIP 90618 |
14.17 |
| 2026-08-19 00:00 |
18:29:21.39 |
+14:02:05.0 |
HIP 90618 |
10.88 |