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) |
| 2026-09-20 00:00 |
05:42:27.77 |
-30:53:12.9 |
HIP 26815 |
16.62 |
| 2026-09-20 12:00 |
05:42:27.74 |
-30:53:25.6 |
HIP 26815 |
16.78 |
| 2026-09-21 00:00 |
05:42:27.70 |
-30:53:38.3 |
HIP 26815 |
16.94 |
| 2026-09-21 12:00 |
05:42:27.64 |
-30:53:51.0 |
HIP 26815 |
17.10 |
| 2026-09-22 00:00 |
05:42:27.58 |
-30:54:03.7 |
HIP 26815 |
17.26 |
| 2026-09-22 12:00 |
05:42:27.51 |
-30:54:16.4 |
HIP 26815 |
17.41 |
| 2026-09-23 00:00 |
05:42:27.42 |
-30:54:29.1 |
HIP 26815 |
17.57 |
| 2026-09-23 12:00 |
05:42:27.33 |
-30:54:41.8 |
HIP 26815 |
17.73 |
| 2026-09-24 00:00 |
05:42:27.22 |
-30:54:54.5 |
HIP 26815 |
17.89 |
| 2026-09-24 12:00 |
05:42:27.11 |
-30:55:07.2 |
HIP 26815 |
18.04 |
| 2026-09-25 00:00 |
05:42:26.98 |
-30:55:19.8 |
HIP 26815 |
18.20 |
| 2026-09-25 12:00 |
05:42:26.85 |
-30:55:32.5 |
HIP 26815 |
18.36 |
| 2026-09-26 00:00 |
05:42:26.70 |
-30:55:45.2 |
HIP 26815 |
18.51 |
| 2026-09-26 12:00 |
05:42:26.55 |
-30:55:57.8 |
HIP 26815 |
18.67 |
| 2026-09-27 00:00 |
05:42:26.38 |
-30:56:10.4 |
HIP 26815 |
18.82 |
| 2026-09-27 12:00 |
05:42:26.21 |
-30:56:23.1 |
HIP 26815 |
18.98 |
| 2026-09-28 00:00 |
05:42:26.02 |
-30:56:35.7 |
HIP 26815 |
19.13 |
| 2026-09-28 12:00 |
05:42:25.83 |
-30:56:48.3 |
HIP 26815 |
19.29 |
| 2026-09-29 00:00 |
05:42:25.62 |
-30:57:00.9 |
HIP 26815 |
19.44 |
| 2026-09-29 12:00 |
05:42:25.41 |
-30:57:13.4 |
HIP 26815 |
19.60 |
| 2026-09-30 00:00 |
05:42:25.18 |
-30:57:26.0 |
HIP 26815 |
19.75 |
| 2026-09-30 12:00 |
05:42:24.94 |
-30:57:38.5 |
HIP 26815 |
19.91 |
| 2026-10-01 00:00 |
05:42:24.70 |
-30:57:51.1 |
HIP 26815 |
20.06 |
| 2026-10-01 12:00 |
05:42:24.44 |
-30:58:03.6 |
HIP 26815 |
20.22 |
| 2026-10-02 00:00 |
05:42:24.17 |
-30:58:16.1 |
HIP 26815 |
20.37 |
| 2026-10-02 12:00 |
05:42:23.90 |
-30:58:28.5 |
HIP 26815 |
20.52 |
| 2026-10-03 00:00 |
05:42:23.61 |
-30:58:41.0 |
HIP 26815 |
20.68 |
| 2026-10-03 12:00 |
05:42:23.31 |
-30:58:53.4 |
HIP 26815 |
20.83 |
| 2026-10-04 00:00 |
05:42:23.01 |
-30:59:05.8 |
HIP 26815 |
20.98 |
| 2026-10-04 12:00 |
05:42:22.69 |
-30:59:18.2 |
HIP 26815 |
21.14 |
| 2026-10-05 00:00 |
05:42:22.36 |
-30:59:30.5 |
HIP 26815 |
21.29 |
| 2026-10-05 12:00 |
05:42:22.03 |
-30:59:42.9 |
HIP 26815 |
21.44 |
| 2026-10-06 00:00 |
05:42:21.68 |
-30:59:55.2 |
HIP 26815 |
21.59 |
| 2026-10-06 12:00 |
05:42:21.32 |
-31:00:07.5 |
HIP 26815 |
21.75 |
| 2026-10-07 00:00 |
05:42:20.96 |
-31:00:19.7 |
HIP 26815 |
21.90 |
| 2026-10-07 12:00 |
05:42:20.58 |
-31:00:31.9 |
HIP 26815 |
22.05 |
| 2026-10-08 00:00 |
05:42:20.19 |
-31:00:44.1 |
HIP 26815 |
22.20 |
| 2026-10-08 12:00 |
05:42:19.80 |
-31:00:56.3 |
HIP 26815 |
22.35 |
| 2026-10-09 00:00 |
05:42:19.39 |
-31:01:08.4 |
HIP 26815 |
22.50 |
| 2026-10-09 12:00 |
05:42:18.97 |
-31:01:20.5 |
HIP 26815 |
22.65 |
| 2026-10-10 00:00 |
05:42:18.55 |
-31:01:32.6 |
HIP 26815 |
22.80 |
| 2026-10-10 12:00 |
05:42:18.11 |
-31:01:44.6 |
HIP 26815 |
22.96 |
| 2026-10-11 00:00 |
05:42:17.66 |
-31:01:56.6 |
HIP 26815 |
23.11 |