C/1958 D1 (Burnham)
メタデータ
| 項目 |
値 |
| Designation |
C/1958 D1 (Burnham) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1958-04-16T07:16:54.157440Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:14Z |
| Obs used |
22 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1958-04-26.0000000 |
| e |
0.99991611 |
| q (au) |
1.322687 |
| a (au) |
15766.142934 |
| i (deg) |
15.787940 |
| Ω (om, deg) |
151.194462 |
| ω (w, deg) |
16.465841 |
| M (ma, deg) |
0.000005 |
等級
散乱 + 全体線形
$$
M_a = (6.825 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
6.825 |
| 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 |
| 1958-02-22 |
1958-04-15 |
+53.8968 |
-6.982 |
| 1958-04-17 |
1958-09-15 |
+11.0165 |
-1.782 |
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 |
22:23:33.56 |
-10:56:39.6 |
HIP 110439 |
20.93 |
| 2026-02-03 12:00 |
22:23:34.75 |
-10:56:32.8 |
HIP 110439 |
21.18 |
| 2026-02-04 00:00 |
22:23:35.95 |
-10:56:25.9 |
HIP 110439 |
21.43 |
| 2026-02-04 12:00 |
22:23:37.14 |
-10:56:19.1 |
HIP 110439 |
21.69 |
| 2026-02-05 00:00 |
22:23:38.34 |
-10:56:12.2 |
HIP 110439 |
21.94 |
| 2026-02-05 12:00 |
22:23:39.54 |
-10:56:05.3 |
HIP 110439 |
22.20 |
| 2026-02-06 00:00 |
22:23:40.75 |
-10:55:58.4 |
HIP 110439 |
22.46 |
| 2026-02-06 12:00 |
22:23:41.96 |
-10:55:51.5 |
HIP 110439 |
22.73 |
| 2026-02-07 00:00 |
22:23:43.17 |
-10:55:44.5 |
HIP 110439 |
22.99 |
| 2026-02-07 12:00 |
22:23:44.38 |
-10:55:37.6 |
HIP 110439 |
23.26 |
| 2026-02-08 00:00 |
22:23:45.60 |
-10:55:30.6 |
HIP 110439 |
23.53 |
| 2026-02-08 12:00 |
22:23:46.82 |
-10:55:23.6 |
HIP 110439 |
23.80 |
| 2026-02-09 00:00 |
22:23:48.04 |
-10:55:16.6 |
HIP 110439 |
24.07 |
| 2026-02-09 12:00 |
22:23:49.27 |
-10:55:09.6 |
HIP 110439 |
24.35 |
| 2026-02-10 00:00 |
22:23:50.50 |
-10:55:02.6 |
HIP 110439 |
24.63 |
| 2026-02-10 12:00 |
22:23:51.73 |
-10:54:55.5 |
HIP 110439 |
24.91 |
| 2026-02-11 00:00 |
22:23:52.96 |
-10:54:48.5 |
HIP 110439 |
25.19 |
| 2026-02-11 12:00 |
22:23:54.20 |
-10:54:41.4 |
HIP 110439 |
25.47 |
| 2026-02-12 00:00 |
22:23:55.43 |
-10:54:34.4 |
HIP 110439 |
25.75 |
| 2026-02-12 12:00 |
22:23:56.67 |
-10:54:27.3 |
HIP 110439 |
26.04 |
| 2026-02-13 00:00 |
22:23:57.91 |
-10:54:20.2 |
HIP 110439 |
26.32 |
| 2026-02-13 12:00 |
22:23:59.16 |
-10:54:13.1 |
HIP 110439 |
26.61 |
| 2026-02-14 00:00 |
22:24:00.40 |
-10:54:06.0 |
HIP 110439 |
26.90 |
| 2026-02-14 12:00 |
22:24:01.65 |
-10:53:58.9 |
HIP 110439 |
27.19 |
| 2026-02-15 00:00 |
22:24:02.90 |
-10:53:51.8 |
HIP 110439 |
27.48 |
| 2026-02-15 12:00 |
22:24:04.15 |
-10:53:44.7 |
HIP 110439 |
27.77 |
| 2026-02-16 00:00 |
22:24:05.40 |
-10:53:37.5 |
HIP 110691 |
27.83 |
| 2026-02-16 12:00 |
22:24:06.65 |
-10:53:30.4 |
HIP 110691 |
27.66 |
| 2026-02-17 00:00 |
22:24:07.90 |
-10:53:23.3 |
HIP 110691 |
27.50 |
| 2026-02-17 12:00 |
22:24:09.16 |
-10:53:16.1 |
HIP 110691 |
27.33 |
| 2026-02-18 00:00 |
22:24:10.41 |
-10:53:09.0 |
HIP 110691 |
27.17 |
| 2026-02-18 12:00 |
22:24:11.67 |
-10:53:01.8 |
HIP 110691 |
27.01 |
| 2026-02-19 00:00 |
22:24:12.93 |
-10:52:54.7 |
HIP 110691 |
26.86 |
| 2026-02-19 12:00 |
22:24:14.18 |
-10:52:47.5 |
HIP 110691 |
26.70 |
| 2026-02-20 00:00 |
22:24:15.44 |
-10:52:40.4 |
HIP 110691 |
26.55 |
| 2026-02-20 12:00 |
22:24:16.70 |
-10:52:33.2 |
HIP 110691 |
26.41 |
| 2026-02-21 00:00 |
22:24:17.96 |
-10:52:26.1 |
HIP 110691 |
26.26 |
| 2026-02-21 12:00 |
22:24:19.22 |
-10:52:18.9 |
HIP 110691 |
26.12 |
| 2026-02-22 00:00 |
22:24:20.48 |
-10:52:11.7 |
HIP 110691 |
25.99 |
| 2026-02-22 12:00 |
22:24:21.74 |
-10:52:04.6 |
HIP 110691 |
25.85 |
| 2026-02-23 00:00 |
22:24:23.00 |
-10:51:57.4 |
HIP 110691 |
25.72 |
| 2026-02-23 12:00 |
22:24:24.26 |
-10:51:50.3 |
HIP 110691 |
25.60 |
| 2026-02-24 00:00 |
22:24:25.52 |
-10:51:43.2 |
HIP 110691 |
25.48 |