メタデータ
| 項目 |
値 |
| Designation |
C/2023 V1 (Lemmon) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-07-13T00:43:28.493760Z |
| Orbit solution date (soln_date, UTC) |
2026-05-28T12:12:15Z |
| Obs used |
452 |
| 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) |
2025-03-21.0000000 |
| e |
1.00033379 |
| q (au) |
5.092600 |
| a (au) |
-15257.111163 |
| i (deg) |
102.014038 |
| Ω (om, deg) |
15.039304 |
| ω (w, deg) |
103.312710 |
| M (ma, deg) |
-0.000060 |
等級
散乱 + 全体線形
$$
M_a = (3.946 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
3.946 |
| n |
6.000 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
0.996 |
| 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) |
| 2026-06-01 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 |
| 2026-06-02 12:00 |
14:05:26.21 |
+34:07:21.3 |
HIP 68851 |
16.79 |
| 2026-06-03 00:00 |
14:04:57.43 |
+34:03:08.4 |
HIP 68771 |
22.76 |
| 2026-06-03 12:00 |
14:04:28.91 |
+33:58:53.8 |
HIP 68771 |
26.49 |
| 2026-06-04 00:00 |
14:04:00.64 |
+33:54:37.4 |
HIP 68771 |
31.49 |
| 2026-06-04 12:00 |
14:03:32.62 |
+33:50:19.2 |
HIP 68521 |
33.46 |
| 2026-06-05 00:00 |
14:03:04.86 |
+33:45:59.4 |
HIP 68521 |
33.34 |
| 2026-06-05 12:00 |
14:02:37.36 |
+33:41:37.9 |
HIP 68405 |
30.58 |
| 2026-06-06 00:00 |
14:02:10.12 |
+33:37:14.7 |
HIP 68405 |
26.06 |
| 2026-06-06 12:00 |
14:01:43.13 |
+33:32:49.9 |
HIP 68405 |
22.98 |
| 2026-06-07 00:00 |
14:01:16.41 |
+33:28:23.5 |
HIP 68405 |
21.93 |
| 2026-06-07 12:00 |
14:00:49.95 |
+33:23:55.6 |
HIP 68405 |
23.17 |
| 2026-06-08 00:00 |
14:00:23.74 |
+33:19:26.1 |
HIP 68405 |
26.37 |
| 2026-06-08 12:00 |
13:59:57.80 |
+33:14:55.0 |
HIP 68405 |
30.90 |
| 2026-06-09 00:00 |
13:59:32.13 |
+33:10:22.5 |
HIP 68185 |
33.31 |
| 2026-06-09 12:00 |
13:59:06.71 |
+33:05:48.6 |
HIP 68185 |
26.30 |
| 2026-06-10 00:00 |
13:58:41.56 |
+33:01:13.2 |
HIP 68185 |
19.31 |
| 2026-06-10 12:00 |
13:58:16.67 |
+32:56:36.3 |
HIP 68185 |
12.34 |
| 2026-06-11 00:00 |
13:57:52.04 |
+32:51:58.1 |
HIP 68185 |
5.40 |
| 2026-06-11 12:00 |
13:57:27.68 |
+32:47:18.6 |
HIP 68185 |
1.55 |
| 2026-06-12 00:00 |
13:57:03.58 |
+32:42:37.7 |
HIP 68185 |
8.43 |
| 2026-06-12 12:00 |
13:56:39.75 |
+32:37:55.5 |
HIP 68185 |
15.30 |
| 2026-06-13 00:00 |
13:56:16.19 |
+32:33:12.1 |
HIP 68216 |
21.42 |
| 2026-06-13 12:00 |
13:55:52.88 |
+32:28:27.4 |
HIP 68065 |
26.77 |
| 2026-06-14 00:00 |
13:55:29.85 |
+32:23:41.5 |
HIP 68065 |
23.38 |
| 2026-06-14 12:00 |
13:55:07.08 |
+32:18:54.4 |
HIP 68065 |
21.63 |
| 2026-06-15 00:00 |
13:54:44.58 |
+32:14:06.1 |
HIP 68065 |
21.88 |
| 2026-06-15 12:00 |
13:54:22.34 |
+32:09:16.7 |
HIP 68065 |
24.06 |
| 2026-06-16 00:00 |
13:54:00.36 |
+32:04:26.2 |
HIP 67840 |
24.71 |
| 2026-06-16 12:00 |
13:53:38.66 |
+31:59:34.6 |
HIP 67840 |
19.69 |
| 2026-06-17 00:00 |
13:53:17.21 |
+31:54:41.9 |
HIP 67840 |
15.93 |
| 2026-06-17 12:00 |
13:52:56.04 |
+31:49:48.2 |
HIP 67840 |
14.39 |
| 2026-06-18 00:00 |
13:52:35.12 |
+31:44:53.6 |
HIP 67840 |
15.72 |
| 2026-06-18 12:00 |
13:52:14.47 |
+31:39:57.9 |
HIP 67840 |
19.32 |
| 2026-06-19 00:00 |
13:51:54.09 |
+31:35:01.3 |
HIP 67840 |
24.17 |
| 2026-06-19 12:00 |
13:51:33.97 |
+31:30:03.8 |
HIP 67525 |
24.58 |
| 2026-06-20 00:00 |
13:51:14.11 |
+31:25:05.4 |
HIP 67525 |
18.15 |
| 2026-06-20 12:00 |
13:50:54.51 |
+31:20:06.1 |
HIP 67525 |
11.87 |
| 2026-06-21 00:00 |
13:50:35.18 |
+31:15:06.0 |
HIP 67525 |
6.13 |
| 2026-06-21 12:00 |
13:50:16.10 |
+31:10:05.1 |
HIP 67525 |
4.31 |
| 2026-06-22 00:00 |
13:49:57.29 |
+31:05:03.4 |
HIP 67525 |
9.12 |