The
symbol and u
Table 1 Cosmic
parameter
|
Name |
Symbol |
Unit |
Value |
|
Average mass density |
r |
10-30 g/cm3 |
1.
75 |
|
Mass |
M |
10-52 kg |
1.
00 |
|
Hubble constant |
H |
Km/s ， Mpc |
68 |
|
Maximal observation value |
H
max |
Km/s ， Mpc |
85 |
|
Coefficient of expansion |
m |
|
0.
402 |
|
Repulsion constant |
L 0 |
10-88 1/kg ， s2 |
7.
53 |
|
Cosmic constant |
L |
10-88 1/kg ， s2 |
7.
04 |
|
Apparent radius ( Z=2.3 ) |
a |
Gpc |
3.
59 |
|
Critical distance |
a
0 |
Gpc |
1.
45 |
|
Maximum of redshift |
Zmax |
|
5.
78 |
|
Expansion age (upper limit) |
t
e |
10 9 years |
310 |
|
Limit of sight (Limit of observation) |
r
s |
Gpc |
4.
41 |
|
Arbitrary radius or distance |
r |
Gpc |
|
G=6.672〜10-11 N， m2 /kg2
c=2.99792458〜108 m/s