# 基本小行星物理特征

## 直径

$a= d\,(\mu^2\nu)^{\frac{1}{3}}\,\!$
$b= d\,\left(\frac{\nu}{\mu}\right)^{\frac{1}{3}}\,\!$
$c= \frac{d}{(\nu^2\mu)^{\frac{1}{3}}}\,\!$

## 质量

$M = \frac{\pi abc\rho}{6}\,\!$

## 表面重力

### 球体

$g_{\rm spherical} = \frac{GM}{r^2}\,\!$

### 离心力

$g_{\rm centrifugal} = -\left(\frac{2\pi}{T}\right)^2 r \sin\theta$

$g_{\rm effective} = g_{\rm gravitational} + g_{\rm centrifugal}\ .$

## 逃逸速度

$v_e = \sqrt{2gr}$

## 表面温度

### 平均温度

$R_{\mbox{in}} = \frac{(1-A)L_0\pi r^2}{4\pi a^2},$

$R_{\mbox{out}} = 4\pi r^2 \epsilon \sigma T^4\frac{}{},$

$T = \left ( \frac{(1 - A) L_0}{\epsilon \sigma 16 \pi a^2} \right )^{1/4}\,\!$

### 最高温度

$T_{ss} = \sqrt{2}\, T \approx 1.41\, T,$

$T_{ss}^{\rm max} = \sqrt{\frac{2}{1-e}}\ T,$

### 温度测量和规则温度波动

$T = {\rm constant} \times \frac{1}{\sqrt{d}},$

## 参考资料

1. ^ 1.0 1.1 1.2 IRAS Minor Planet Survey Supplemental IRAS Minor Planet Survey. PDS Asteroid/Dust Archive. [2006-10-21]. （原始内容存档于2006-09-02）.
2. ^ 2.0 2.1 2.2 Midcourse Space Experiment (MSX) Infrared Minor Planet Survey. PDS Asteroid/Dust Archive. [2006-10-21]. （原始内容存档于2006-09-02）.
3. ^ Magnusson, Per. Pole determinations of asteroids. (编) Richard P. Binzel, Tom Gehrels, and Mildred S. Matthews. Asteroids II. Tucson: University of Arizona Press. 1989: 1180–1190.
4. ^ Asteroid Spin Vectors. [2006-10-21]. （原始内容存档于2006-09-02）.
5. ^ 5.0 5.1 Modeled asteroids. rni.helsinki.fi. 2006-06-18.
6. ^ 6.0 6.1 For example Asteroid Densities Compilation. PDS Asteroid/Dust Archive. [2006-10-21]. （原始内容存档于2006-09-02）.
7. ^ Hilton, James L.. Masses of the Largest Asteroids. November 30, 1999 [2009-09-05].[失效連結]
8. ^
9. ^ Krasinsky, G. A.; Pitjeva, E. V.; Vasilyev, M. V.; Yagudina, E. I. Hidden Mass in the Asteroid Belt. Icarus. 2002-07, 158 (1): 98–105. Bibcode:2002Icar..158...98K. doi:10.1006/icar.2002.6837.
10. ^ Asteroid Lightcurve Parameters. PDS Asteroid/Dust Archive. [2006-10-21]. （原始内容存档于2006-09-02）.
11. ^ Asteroid Taxonomies PDS Asteroid/Dust Archive. 2006-10-21.
12. ^ 12.0 12.1 Orbit Diagrams. NASA. [2006-06-18].
13. ^ Asteroid Data Sets. PDS Asteroid/Dust Archive. [2006-10-21]. （原始内容存档于2006-09-28）.