# 基本小行星物理特征

## 直径

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

## 质量

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

## 表面重力

### 球体

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

### 离心力

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

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

## 脫離速度

${\displaystyle v_{e}={\sqrt {2gr}}}$

## 表面温度

### 平均温度

${\displaystyle R_{\mbox{in}}={\frac {(1-A)L_{0}\pi r^{2}}{4\pi a^{2}}},}$

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

${\displaystyle T=\left({\frac {(1-A)L_{0}}{\epsilon \sigma 16\pi a^{2}}}\right)^{1/4}\,\!}$

### 最高温度

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

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

### 温度测量和规则温度波动

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

## 参考资料

1. 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. 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. Richard P. Binzel, Tom Gehrels, and Mildred S. Matthews (编). 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. Modeled asteroids. rni.helsinki.fi. 2006-06-18.
6. 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]. （原始内容存档于2009-02-12）.
8. ^ Pitjeva, E. V. Estimations of masses of the largest asteroids and the main asteroid belt from ranging to planets, Mars orbiters and landers. 35th COSPAR Scientific Assembly. Held 18–25 July 2004, in Paris, France: 2014. 2004 [2011-05-04]. （原始内容存档于2018-08-09）.
9. ^ Krasinsky, G. A.; Pitjeva, E. V.; Vasilyev, M. V.; Yagudina, E. I. Hidden Mass in the Asteroid Belt. Icarus. July 2002, 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. Orbit Diagrams. NASA. [2006-06-18]. （原始内容存档于2017-03-15）.
13. ^ Asteroid Data Sets. PDS Asteroid/Dust Archive. [2006-10-21]. （原始内容存档于2006-09-28）.