メタデータ
| 項目 |
値 |
| Designation |
C/2023 V1 (Lemmon) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-07-13T00:42:43.911360Z |
| Orbit solution date (soln_date, UTC) |
2026-03-31T09:42:18Z |
| Obs used |
408 |
| 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) |
2025-02-01.0000000 |
| e |
1.00029388 |
| q (au) |
5.092601 |
| a (au) |
-17328.732135 |
| i (deg) |
102.013905 |
| Ω (om, deg) |
15.036925 |
| ω (w, deg) |
103.311977 |
| M (ma, deg) |
-0.000070 |
等級
散乱 + 全体線形
$$
M_a = (3.367 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
3.367 |
| n |
6.000 |
| gf |
0.989 |
| gb |
-0.815 |
| 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) |
| 2026-03-26 00:00 |
15:29:44.62 |
+36:43:33.4 |
HIP 75928 |
9.86 |
| 2026-03-26 12:00 |
15:29:12.38 |
+36:45:29.2 |
HIP 75928 |
15.37 |
| 2026-03-27 00:00 |
15:28:39.90 |
+36:47:23.1 |
HIP 75928 |
21.63 |
| 2026-03-27 12:00 |
15:28:07.17 |
+36:49:15.1 |
HIP 75616 |
20.39 |
| 2026-03-28 00:00 |
15:27:34.21 |
+36:51:05.3 |
HIP 75616 |
18.50 |
| 2026-03-28 12:00 |
15:27:01.01 |
+36:52:53.5 |
HIP 75616 |
19.01 |
| 2026-03-29 00:00 |
15:26:27.58 |
+36:54:39.8 |
HIP 75616 |
21.79 |
| 2026-03-29 12:00 |
15:25:53.91 |
+36:56:24.0 |
HIP 75373 |
21.82 |
| 2026-03-30 00:00 |
15:25:20.01 |
+36:58:06.2 |
HIP 75373 |
15.81 |
| 2026-03-30 12:00 |
15:24:45.89 |
+36:59:46.4 |
HIP 75373 |
10.98 |
| 2026-03-31 00:00 |
15:24:11.55 |
+37:01:24.4 |
HIP 75373 |
9.44 |
| 2026-03-31 12:00 |
15:23:36.99 |
+37:03:00.4 |
HIP 75373 |
12.52 |
| 2026-04-01 00:00 |
15:23:02.21 |
+37:04:34.1 |
HIP 75373 |
18.03 |
| 2026-04-01 12:00 |
15:22:27.22 |
+37:06:05.7 |
HIP 75373 |
24.40 |
| 2026-04-02 00:00 |
15:21:52.01 |
+37:07:35.0 |
HIP 74988 |
30.54 |
| 2026-04-02 12:00 |
15:21:16.60 |
+37:09:02.1 |
HIP 74988 |
23.38 |
| 2026-04-03 00:00 |
15:20:40.99 |
+37:10:26.9 |
HIP 74988 |
16.24 |
| 2026-04-03 12:00 |
15:20:05.17 |
+37:11:49.4 |
HIP 74988 |
9.22 |
| 2026-04-04 00:00 |
15:19:29.16 |
+37:13:09.5 |
HIP 74988 |
3.45 |
| 2026-04-04 12:00 |
15:18:52.95 |
+37:14:27.3 |
HIP 74988 |
6.77 |
| 2026-04-05 00:00 |
15:18:16.55 |
+37:15:42.6 |
HIP 74988 |
13.71 |
| 2026-04-05 12:00 |
15:17:39.97 |
+37:16:55.5 |
HIP 74730 |
20.16 |
| 2026-04-06 00:00 |
15:17:03.20 |
+37:18:05.9 |
HIP 74730 |
16.21 |
| 2026-04-06 12:00 |
15:16:26.25 |
+37:19:13.8 |
HIP 74730 |
15.09 |
| 2026-04-07 00:00 |
15:15:49.12 |
+37:20:19.2 |
HIP 74730 |
17.40 |
| 2026-04-07 12:00 |
15:15:11.82 |
+37:21:22.1 |
HIP 74730 |
22.10 |
| 2026-04-08 00:00 |
15:14:34.36 |
+37:22:22.3 |
HIP 74730 |
28.05 |
| 2026-04-08 12:00 |
15:13:56.72 |
+37:23:20.0 |
HIP 74506 |
24.95 |
| 2026-04-09 00:00 |
15:13:18.93 |
+37:24:15.0 |
HIP 74506 |
23.68 |
| 2026-04-09 12:00 |
15:12:40.98 |
+37:25:07.3 |
HIP 74506 |
24.81 |
| 2026-04-10 00:00 |
15:12:02.88 |
+37:25:56.9 |
HIP 74225 |
27.61 |
| 2026-04-10 12:00 |
15:11:24.63 |
+37:26:43.8 |
HIP 74225 |
21.21 |
| 2026-04-11 00:00 |
15:10:46.23 |
+37:27:28.0 |
HIP 74225 |
15.95 |
| 2026-04-11 12:00 |
15:10:07.69 |
+37:28:09.4 |
HIP 74225 |
13.30 |
| 2026-04-12 00:00 |
15:09:29.02 |
+37:28:47.9 |
HIP 74135 |
11.42 |
| 2026-04-12 12:00 |
15:08:50.21 |
+37:29:23.7 |
HIP 74135 |
10.43 |
| 2026-04-13 00:00 |
15:08:11.28 |
+37:29:56.6 |
HIP 74135 |
14.36 |
| 2026-04-13 12:00 |
15:07:32.23 |
+37:30:26.7 |
HIP 74135 |
20.58 |
| 2026-04-14 00:00 |
15:06:53.05 |
+37:30:53.8 |
HIP 74009 |
27.38 |
| 2026-04-14 12:00 |
15:06:13.77 |
+37:31:18.1 |
HIP 74009 |
30.68 |
| 2026-04-15 00:00 |
15:05:34.37 |
+37:31:39.4 |
HIP 74009 |
35.41 |
| 2026-04-15 12:00 |
15:04:54.87 |
+37:31:57.7 |
HIP 73612 |
34.08 |
| 2026-04-16 00:00 |
15:04:15.27 |
+37:32:13.1 |
HIP 73612 |
28.50 |