Showa

04973, 1978CF, 1981WK7, 1987SH14, 1990FT, J78C00F, J81W07K, J87S14H, J90F00T

All data for this body: [vot]

MPC data
Name (number) Showa (4973)
Packed designation 04973
a 3.42975
e 0.07659
i / sin(i) 18.9189 / 0.32423
q 3.16707
Q 3.69243
ω 130.3434
Node 352.8139
m 59.4531
n 0.1552
Epoch 2459600.5
nobs 2661
nopp 26
Years observed 1971-2022
rms 0.53
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.420
ep 0.129
sin(ip) 0.328
Value Standard error
G 0.150
H 11.650
Mass
D 28.41 0.379
pV 0.064 0.0075
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.4200 0.1291 0.3279 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Jan-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
24.84 2.700 2.700 Tedesco 2002AJ....123.1056T STM
27.96 0.423 0.423 Masiero 2011ApJ...741...68M NEATM
30.77 6.150 6.150 Ali-Lagoa 2018A&A...612A..85A NEATM
30.82 0.920 0.920 Usui 2011PASJ...63.1117U NEATM
31.53 6.310 6.310 Ali-Lagoa 2018A&A...612A..85A NEATM
31.96 12.190 12.190 Nugent 2016AJ....152...63N NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.040 0.0700 0.0700 Nugent 2016AJ....152...63N NEATM
0.047 0.0190 0.0190 Ali-Lagoa 2018A&A...612A..85A NEATM
0.050 0.0200 0.0200 Ali-Lagoa 2018A&A...612A..85A NEATM
0.068 0.0097 0.0097 Masiero 2011ApJ...741...68M NEATM
0.086 0.0230 0.0230 Tedesco 2002AJ....123.1056T STM
G data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.15 MPC-2022-01-18 MPC-2022-01-18 Phot
H data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
11.65 MPC-2022-01-18 MPC-2022-01-18 Phot