C/1932 M1 (Newman)
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) |
| 2026-02-03 00:00 |
05:38:20.53 |
-31:08:03.1 |
HIP 26433 |
11.37 |
| 2026-02-03 12:00 |
05:38:19.73 |
-31:07:53.9 |
HIP 26433 |
11.15 |
| 2026-02-04 00:00 |
05:38:18.93 |
-31:07:44.6 |
HIP 26433 |
10.93 |
| 2026-02-04 12:00 |
05:38:18.15 |
-31:07:35.3 |
HIP 26433 |
10.72 |
| 2026-02-05 00:00 |
05:38:17.37 |
-31:07:25.9 |
HIP 26433 |
10.51 |
| 2026-02-05 12:00 |
05:38:16.60 |
-31:07:16.5 |
HIP 26433 |
10.30 |
| 2026-02-06 00:00 |
05:38:15.84 |
-31:07:06.9 |
HIP 26433 |
10.09 |
| 2026-02-06 12:00 |
05:38:15.08 |
-31:06:57.3 |
HIP 26433 |
9.89 |
| 2026-02-07 00:00 |
05:38:14.34 |
-31:06:47.7 |
HIP 26433 |
9.68 |
| 2026-02-07 12:00 |
05:38:13.60 |
-31:06:37.9 |
HIP 26433 |
9.48 |
| 2026-02-08 00:00 |
05:38:12.87 |
-31:06:28.1 |
HIP 26433 |
9.28 |
| 2026-02-08 12:00 |
05:38:12.15 |
-31:06:18.2 |
HIP 26433 |
9.09 |
| 2026-02-09 00:00 |
05:38:11.44 |
-31:06:08.3 |
HIP 26433 |
8.90 |
| 2026-02-09 12:00 |
05:38:10.74 |
-31:05:58.3 |
HIP 26433 |
8.71 |
| 2026-02-10 00:00 |
05:38:10.05 |
-31:05:48.2 |
HIP 26433 |
8.52 |
| 2026-02-10 12:00 |
05:38:09.37 |
-31:05:38.0 |
HIP 26433 |
8.34 |
| 2026-02-11 00:00 |
05:38:08.69 |
-31:05:27.8 |
HIP 26433 |
8.16 |
| 2026-02-11 12:00 |
05:38:08.03 |
-31:05:17.5 |
HIP 26433 |
7.99 |
| 2026-02-12 00:00 |
05:38:07.37 |
-31:05:07.2 |
HIP 26433 |
7.82 |
| 2026-02-12 12:00 |
05:38:06.72 |
-31:04:56.8 |
HIP 26433 |
7.65 |
| 2026-02-13 00:00 |
05:38:06.08 |
-31:04:46.4 |
HIP 26433 |
7.49 |
| 2026-02-13 12:00 |
05:38:05.45 |
-31:04:35.8 |
HIP 26433 |
7.33 |
| 2026-02-14 00:00 |
05:38:04.83 |
-31:04:25.3 |
HIP 26433 |
7.18 |
| 2026-02-14 12:00 |
05:38:04.22 |
-31:04:14.6 |
HIP 26433 |
7.03 |
| 2026-02-15 00:00 |
05:38:03.62 |
-31:04:03.9 |
HIP 26433 |
6.89 |
| 2026-02-15 12:00 |
05:38:03.03 |
-31:03:53.2 |
HIP 26433 |
6.76 |
| 2026-02-16 00:00 |
05:38:02.45 |
-31:03:42.4 |
HIP 26433 |
6.63 |
| 2026-02-16 12:00 |
05:38:01.88 |
-31:03:31.5 |
HIP 26433 |
6.51 |
| 2026-02-17 00:00 |
05:38:01.31 |
-31:03:20.6 |
HIP 26433 |
6.40 |
| 2026-02-17 12:00 |
05:38:00.76 |
-31:03:09.6 |
HIP 26433 |
6.30 |
| 2026-02-18 00:00 |
05:38:00.22 |
-31:02:58.6 |
HIP 26433 |
6.20 |
| 2026-02-18 12:00 |
05:37:59.68 |
-31:02:47.6 |
HIP 26433 |
6.11 |
| 2026-02-19 00:00 |
05:37:59.16 |
-31:02:36.4 |
HIP 26433 |
6.03 |
| 2026-02-19 12:00 |
05:37:58.64 |
-31:02:25.3 |
HIP 26433 |
5.96 |
| 2026-02-20 00:00 |
05:37:58.14 |
-31:02:14.1 |
HIP 26433 |
5.90 |
| 2026-02-20 12:00 |
05:37:57.64 |
-31:02:02.8 |
HIP 26433 |
5.85 |
| 2026-02-21 00:00 |
05:37:57.16 |
-31:01:51.5 |
HIP 26433 |
5.81 |
| 2026-02-21 12:00 |
05:37:56.68 |
-31:01:40.1 |
HIP 26433 |
5.77 |
| 2026-02-22 00:00 |
05:37:56.22 |
-31:01:28.8 |
HIP 26433 |
5.75 |
| 2026-02-22 12:00 |
05:37:55.76 |
-31:01:17.3 |
HIP 26433 |
5.74 |
| 2026-02-23 00:00 |
05:37:55.32 |
-31:01:05.8 |
HIP 26433 |
5.74 |
| 2026-02-23 12:00 |
05:37:54.88 |
-31:00:54.3 |
HIP 26433 |
5.75 |
| 2026-02-24 00:00 |
05:37:54.46 |
-31:00:42.8 |
HIP 26433 |
5.76 |