C/1952 M1 (Peltier)
メタデータ
| 項目 |
値 |
| Designation |
C/1952 M1 (Peltier) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1952-07-15T06:06:23.693760Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:10Z |
| Obs used |
30 |
| NEO |
- |
| M1 |
9.100 |
| K1 |
23.000 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1952-08-08.0000000 |
| e |
0.99975208 |
| q (au) |
1.201937 |
| a (au) |
4848.007632 |
| i (deg) |
45.552738 |
| Ω (om, deg) |
188.643743 |
| ω (w, deg) |
96.584082 |
| M (ma, deg) |
0.000069 |
等級
散乱 + 全体線形
$$
M_a = (8.443 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
8.443 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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
残差 (区間線形)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 開始日 (UTC) |
終了日 (UTC) |
a |
b |
| 1952-07-15 |
1952-11-20 |
+11.5410 |
-1.417 |
log10 r = log10(太陽距離/AU)、Δ = 地球距離(AU)
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
05:58:12.07 |
-22:01:07.0 |
HIP 28132 |
25.88 |
| 2026-02-03 12:00 |
05:58:11.13 |
-22:00:57.8 |
HIP 28132 |
25.82 |
| 2026-02-04 00:00 |
05:58:10.20 |
-22:00:48.5 |
HIP 28132 |
25.76 |
| 2026-02-04 12:00 |
05:58:09.27 |
-22:00:39.2 |
HIP 28132 |
25.70 |
| 2026-02-05 00:00 |
05:58:08.35 |
-22:00:29.8 |
HIP 28132 |
25.65 |
| 2026-02-05 12:00 |
05:58:07.45 |
-22:00:20.3 |
HIP 28132 |
25.61 |
| 2026-02-06 00:00 |
05:58:06.55 |
-22:00:10.7 |
HIP 28132 |
25.57 |
| 2026-02-06 12:00 |
05:58:05.66 |
-22:00:01.1 |
HIP 28132 |
25.53 |
| 2026-02-07 00:00 |
05:58:04.77 |
-21:59:51.3 |
HIP 28132 |
25.50 |
| 2026-02-07 12:00 |
05:58:03.90 |
-21:59:41.5 |
HIP 28132 |
25.48 |
| 2026-02-08 00:00 |
05:58:03.04 |
-21:59:31.6 |
HIP 28132 |
25.45 |
| 2026-02-08 12:00 |
05:58:02.18 |
-21:59:21.7 |
HIP 28132 |
25.44 |
| 2026-02-09 00:00 |
05:58:01.33 |
-21:59:11.7 |
HIP 28132 |
25.43 |
| 2026-02-09 12:00 |
05:58:00.50 |
-21:59:01.5 |
HIP 28132 |
25.42 |
| 2026-02-10 00:00 |
05:57:59.67 |
-21:58:51.4 |
HIP 28132 |
25.42 |
| 2026-02-10 12:00 |
05:57:58.85 |
-21:58:41.1 |
HIP 28132 |
25.43 |
| 2026-02-11 00:00 |
05:57:58.04 |
-21:58:30.8 |
HIP 28132 |
25.43 |
| 2026-02-11 12:00 |
05:57:57.24 |
-21:58:20.4 |
HIP 28132 |
25.45 |
| 2026-02-12 00:00 |
05:57:56.45 |
-21:58:09.9 |
HIP 28132 |
25.47 |
| 2026-02-12 12:00 |
05:57:55.67 |
-21:57:59.4 |
HIP 28132 |
25.49 |
| 2026-02-13 00:00 |
05:57:54.89 |
-21:57:48.8 |
HIP 28132 |
25.52 |
| 2026-02-13 12:00 |
05:57:54.13 |
-21:57:38.2 |
HIP 28132 |
25.55 |
| 2026-02-14 00:00 |
05:57:53.38 |
-21:57:27.4 |
HIP 28132 |
25.59 |
| 2026-02-14 12:00 |
05:57:52.64 |
-21:57:16.6 |
HIP 28132 |
25.63 |
| 2026-02-15 00:00 |
05:57:51.90 |
-21:57:05.8 |
HIP 28132 |
25.68 |
| 2026-02-15 12:00 |
05:57:51.18 |
-21:56:54.8 |
HIP 28132 |
25.73 |
| 2026-02-16 00:00 |
05:57:50.47 |
-21:56:43.9 |
HIP 28132 |
25.78 |
| 2026-02-16 12:00 |
05:57:49.76 |
-21:56:32.8 |
HIP 28132 |
25.84 |
| 2026-02-17 00:00 |
05:57:49.07 |
-21:56:21.7 |
HIP 28132 |
25.91 |
| 2026-02-17 12:00 |
05:57:48.39 |
-21:56:10.5 |
HIP 28284 |
25.94 |
| 2026-02-18 00:00 |
05:57:47.71 |
-21:55:59.3 |
HIP 28284 |
25.84 |
| 2026-02-18 12:00 |
05:57:47.05 |
-21:55:48.0 |
HIP 28284 |
25.74 |
| 2026-02-19 00:00 |
05:57:46.40 |
-21:55:36.7 |
HIP 28284 |
25.63 |
| 2026-02-19 12:00 |
05:57:45.75 |
-21:55:25.3 |
HIP 28284 |
25.53 |
| 2026-02-20 00:00 |
05:57:45.12 |
-21:55:13.8 |
HIP 28284 |
25.43 |
| 2026-02-20 12:00 |
05:57:44.50 |
-21:55:02.3 |
HIP 28284 |
25.32 |
| 2026-02-21 00:00 |
05:57:43.89 |
-21:54:50.8 |
HIP 28284 |
25.22 |
| 2026-02-21 12:00 |
05:57:43.29 |
-21:54:39.2 |
HIP 28284 |
25.12 |
| 2026-02-22 00:00 |
05:57:42.70 |
-21:54:27.5 |
HIP 28284 |
25.01 |
| 2026-02-22 12:00 |
05:57:42.12 |
-21:54:15.8 |
HIP 28284 |
24.91 |
| 2026-02-23 00:00 |
05:57:41.55 |
-21:54:04.0 |
HIP 28284 |
24.81 |
| 2026-02-23 12:00 |
05:57:40.99 |
-21:53:52.2 |
HIP 28284 |
24.70 |
| 2026-02-24 00:00 |
05:57:40.44 |
-21:53:40.4 |
HIP 28284 |
24.60 |