メタデータ
| 項目 |
値 |
| Designation |
C/1932 M1 (Newman) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1932-09-24T13:18:01.739520Z |
| Orbit solution date (soln_date, UTC) |
2023-12-04T20:32:28Z |
| Obs used |
67 |
| NEO |
- |
| M1 |
11.100 |
| K1 |
4.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1932-08-08.0000000 |
| e |
1.00049326 |
| q (au) |
1.647388 |
| a (au) |
-3339.781255 |
| i (deg) |
78.388473 |
| Ω (om, deg) |
246.089739 |
| ω (w, deg) |
69.788496 |
| M (ma, deg) |
-0.000243 |
等級
散乱 + 全体線形
$$
M_a = (11.370 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.370 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.573 |
| k |
0.800 |
| 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 |
05:38:46.52 |
-30:32:32.6 |
HIP 26660 |
16.21 |
| 2026-05-12 12:00 |
05:38:47.50 |
-30:32:25.5 |
HIP 26660 |
16.06 |
| 2026-05-13 00:00 |
05:38:48.48 |
-30:32:18.6 |
HIP 26660 |
15.90 |
| 2026-05-13 12:00 |
05:38:49.47 |
-30:32:11.7 |
HIP 26660 |
15.75 |
| 2026-05-14 00:00 |
05:38:50.46 |
-30:32:04.9 |
HIP 26660 |
15.59 |
| 2026-05-14 12:00 |
05:38:51.46 |
-30:31:58.2 |
HIP 26660 |
15.44 |
| 2026-05-15 00:00 |
05:38:52.47 |
-30:31:51.6 |
HIP 26660 |
15.29 |
| 2026-05-15 12:00 |
05:38:53.48 |
-30:31:45.0 |
HIP 26660 |
15.13 |
| 2026-05-16 00:00 |
05:38:54.49 |
-30:31:38.6 |
HIP 26660 |
14.98 |
| 2026-05-16 12:00 |
05:38:55.51 |
-30:31:32.2 |
HIP 26660 |
14.83 |
| 2026-05-17 00:00 |
05:38:56.54 |
-30:31:26.0 |
HIP 26660 |
14.68 |
| 2026-05-17 12:00 |
05:38:57.57 |
-30:31:19.8 |
HIP 26660 |
14.54 |
| 2026-05-18 00:00 |
05:38:58.60 |
-30:31:13.7 |
HIP 26660 |
14.39 |
| 2026-05-18 12:00 |
05:38:59.64 |
-30:31:07.7 |
HIP 26660 |
14.24 |
| 2026-05-19 00:00 |
05:39:00.69 |
-30:31:01.8 |
HIP 26660 |
14.10 |
| 2026-05-19 12:00 |
05:39:01.74 |
-30:30:56.0 |
HIP 26660 |
13.95 |
| 2026-05-20 00:00 |
05:39:02.79 |
-30:30:50.3 |
HIP 26660 |
13.81 |
| 2026-05-20 12:00 |
05:39:03.85 |
-30:30:44.7 |
HIP 26660 |
13.67 |
| 2026-05-21 00:00 |
05:39:04.91 |
-30:30:39.1 |
HIP 26660 |
13.53 |
| 2026-05-21 12:00 |
05:39:05.97 |
-30:30:33.7 |
HIP 26660 |
13.39 |
| 2026-05-22 00:00 |
05:39:07.04 |
-30:30:28.4 |
HIP 26660 |
13.25 |
| 2026-05-22 12:00 |
05:39:08.12 |
-30:30:23.1 |
HIP 26660 |
13.12 |
| 2026-05-23 00:00 |
05:39:09.20 |
-30:30:18.0 |
HIP 26660 |
12.98 |
| 2026-05-23 12:00 |
05:39:10.28 |
-30:30:12.9 |
HIP 26660 |
12.85 |
| 2026-05-24 00:00 |
05:39:11.36 |
-30:30:07.9 |
HIP 26660 |
12.72 |
| 2026-05-24 12:00 |
05:39:12.45 |
-30:30:03.1 |
HIP 26660 |
12.59 |
| 2026-05-25 00:00 |
05:39:13.55 |
-30:29:58.3 |
HIP 26660 |
12.46 |
| 2026-05-25 12:00 |
05:39:14.64 |
-30:29:53.6 |
HIP 26660 |
12.34 |
| 2026-05-26 00:00 |
05:39:15.74 |
-30:29:49.0 |
HIP 26660 |
12.22 |
| 2026-05-26 12:00 |
05:39:16.85 |
-30:29:44.5 |
HIP 26660 |
12.10 |
| 2026-05-27 00:00 |
05:39:17.95 |
-30:29:40.1 |
HIP 26660 |
11.98 |
| 2026-05-27 12:00 |
05:39:19.06 |
-30:29:35.8 |
HIP 26660 |
11.86 |
| 2026-05-28 00:00 |
05:39:20.18 |
-30:29:31.6 |
HIP 26660 |
11.75 |
| 2026-05-28 12:00 |
05:39:21.29 |
-30:29:27.5 |
HIP 26660 |
11.64 |
| 2026-05-29 00:00 |
05:39:22.41 |
-30:29:23.5 |
HIP 26660 |
11.53 |
| 2026-05-29 12:00 |
05:39:23.53 |
-30:29:19.6 |
HIP 26660 |
11.43 |
| 2026-05-30 00:00 |
05:39:24.66 |
-30:29:15.8 |
HIP 26660 |
11.33 |
| 2026-05-30 12:00 |
05:39:25.79 |
-30:29:12.1 |
HIP 26660 |
11.23 |
| 2026-05-31 00:00 |
05:39:26.92 |
-30:29:08.5 |
HIP 26660 |
11.13 |
| 2026-05-31 12:00 |
05:39:28.05 |
-30:29:05.0 |
HIP 26660 |
11.04 |
| 2026-06-01 00:00 |
05:39:29.19 |
-30:29:01.5 |
HIP 26660 |
10.95 |
| 2026-06-01 12:00 |
05:39:30.33 |
-30:28:58.2 |
HIP 26660 |
10.86 |
| 2026-06-02 00:00 |
05:39:31.47 |
-30:28:55.0 |
HIP 26660 |
10.78 |