メタデータ
| 項目 |
値 |
| Designation |
C/2023 V1 (Lemmon) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-07-13T00:41:26.056320Z |
| Orbit solution date (soln_date, UTC) |
2026-04-30T15:12:15Z |
| Obs used |
430 |
| NEO |
- |
| M1 |
6.700 |
| K1 |
11.750 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2023-11-02T05:36:33.494400Z |
| Discovery magnitude (MPC) |
20.39 G |
| Discovery observatory (MPC) |
I52 · Steward Observatory, Mt. Lemmon Station |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2025-02-26.0000000 |
| e |
1.00031989 |
| q (au) |
5.092601 |
| a (au) |
-15920.035904 |
| i (deg) |
102.014002 |
| Ω (om, deg) |
15.038175 |
| ω (w, deg) |
103.312251 |
| M (ma, deg) |
-0.000067 |
等級
散乱 + 全体線形
$$
M_a = (3.897 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
3.897 |
| n |
6.000 |
| gf |
0.811 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
1.000 |
| 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 |
14:29:41.07 |
+36:33:39.8 |
HIP 70886 |
17.24 |
| 2026-05-12 12:00 |
14:29:03.13 |
+36:31:10.2 |
HIP 70869 |
19.66 |
| 2026-05-13 00:00 |
14:28:25.35 |
+36:28:37.7 |
HIP 70762 |
16.90 |
| 2026-05-13 12:00 |
14:27:47.73 |
+36:26:02.3 |
HIP 70762 |
15.35 |
| 2026-05-14 00:00 |
14:27:10.26 |
+36:23:24.0 |
HIP 70762 |
17.66 |
| 2026-05-14 12:00 |
14:26:32.95 |
+36:20:42.8 |
HIP 70762 |
22.68 |
| 2026-05-15 00:00 |
14:25:55.81 |
+36:17:58.9 |
HIP 70502 |
28.02 |
| 2026-05-15 12:00 |
14:25:18.85 |
+36:15:12.1 |
HIP 70341 |
22.28 |
| 2026-05-16 00:00 |
14:24:42.05 |
+36:12:22.5 |
HIP 70341 |
15.10 |
| 2026-05-16 12:00 |
14:24:05.43 |
+36:09:30.1 |
HIP 70341 |
9.29 |
| 2026-05-17 00:00 |
14:23:29.00 |
+36:06:35.0 |
HIP 70341 |
8.42 |
| 2026-05-17 12:00 |
14:22:52.75 |
+36:03:37.1 |
HIP 70279 |
11.00 |
| 2026-05-18 00:00 |
14:22:16.68 |
+36:00:36.5 |
HIP 70279 |
15.07 |
| 2026-05-18 12:00 |
14:21:40.81 |
+35:57:33.2 |
HIP 70235 |
19.80 |
| 2026-05-19 00:00 |
14:21:05.13 |
+35:54:27.3 |
HIP 70235 |
20.87 |
| 2026-05-19 12:00 |
14:20:29.65 |
+35:51:18.8 |
HIP 70235 |
24.51 |
| 2026-05-20 00:00 |
14:19:54.37 |
+35:48:07.6 |
HIP 69924 |
23.42 |
| 2026-05-20 12:00 |
14:19:19.29 |
+35:44:53.8 |
HIP 69879 |
21.59 |
| 2026-05-21 00:00 |
14:18:44.42 |
+35:41:37.5 |
HIP 69879 |
14.30 |
| 2026-05-21 12:00 |
14:18:09.76 |
+35:38:18.7 |
HIP 69879 |
8.00 |
| 2026-05-22 00:00 |
14:17:35.31 |
+35:34:57.3 |
HIP 69879 |
6.64 |
| 2026-05-22 12:00 |
14:17:01.07 |
+35:31:33.5 |
HIP 69787 |
3.43 |
| 2026-05-23 00:00 |
14:16:27.05 |
+35:28:07.2 |
HIP 69787 |
7.14 |
| 2026-05-23 12:00 |
14:15:53.25 |
+35:24:38.5 |
HIP 69787 |
14.45 |
| 2026-05-24 00:00 |
14:15:19.67 |
+35:21:07.5 |
HIP 69566 |
16.42 |
| 2026-05-24 12:00 |
14:14:46.31 |
+35:17:34.0 |
HIP 69566 |
15.76 |
| 2026-05-25 00:00 |
14:14:13.18 |
+35:13:58.3 |
HIP 69566 |
18.61 |
| 2026-05-25 12:00 |
14:13:40.28 |
+35:10:20.2 |
HIP 69425 |
18.74 |
| 2026-05-26 00:00 |
14:13:07.60 |
+35:06:39.9 |
HIP 69425 |
12.73 |
| 2026-05-26 12:00 |
14:12:35.16 |
+35:02:57.3 |
HIP 69425 |
9.40 |
| 2026-05-27 00:00 |
14:12:02.95 |
+34:59:12.5 |
HIP 69425 |
11.37 |
| 2026-05-27 12:00 |
14:11:30.98 |
+34:55:25.5 |
HIP 69425 |
16.85 |
| 2026-05-28 00:00 |
14:10:59.24 |
+34:51:36.3 |
HIP 69193 |
18.49 |
| 2026-05-28 12:00 |
14:10:27.74 |
+34:47:45.0 |
HIP 69193 |
18.31 |
| 2026-05-29 00:00 |
14:09:56.49 |
+34:43:51.6 |
HIP 69193 |
21.05 |
| 2026-05-29 12:00 |
14:09:25.47 |
+34:39:56.2 |
HIP 69193 |
25.77 |
| 2026-05-30 00:00 |
14:08:54.70 |
+34:35:58.7 |
HIP 68935 |
29.39 |
| 2026-05-30 12:00 |
14:08:24.17 |
+34:31:59.1 |
HIP 68935 |
25.73 |
| 2026-05-31 00:00 |
14:07:53.89 |
+34:27:57.6 |
HIP 68935 |
23.94 |
| 2026-05-31 12:00 |
14:07:23.85 |
+34:23:54.2 |
HIP 68851 |
18.13 |
| 2026-06-01 00:00 |
14:06:54.07 |
+34:19:48.8 |
HIP 68851 |
12.38 |
| 2026-06-01 12:00 |
14:06:24.53 |
+34:15:41.5 |
HIP 68851 |
9.35 |
| 2026-06-02 00:00 |
14:05:55.25 |
+34:11:32.3 |
HIP 68851 |
11.43 |