Zhangyizhong

1998HS130, 1999TR88, 21825, J98HD0S, J99T88R

All data for this body: [vot]

MPC data
Name (number) Zhangyizhong (21825)
Packed designation 21825
a 2.41001
e 0.16975
i / sin(i) 1.5581 / 0.02719
q 2.00090
Q 2.81912
ω 253.8218
Node 56.4259
m 25.3357
n 0.2634
Epoch 2459600.5
nobs 1815
nopp 20
Years observed 1992-2021
rms 0.51
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.410
ep 0.142
sin(ip) 0.017
Value Standard error
G 0.150
H 14.910
Mass
D 5.81 0.055
pV 0.039 0.0062
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4100 0.1422 0.0169 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Jan-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.34 1.440 1.440 Masiero 2020PSJ.....1....5M NEATM
5.37 1.420 1.420 Masiero 2020PSJ.....1....5M NEATM
5.81 0.055 0.055 Masiero 2011ApJ...741...68M NEATM
5.92 1.760 1.760 Nugent 2016AJ....152...63N NEATM
5.99 1.060 1.060 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.035 0.0067 0.0067 Masiero 2011ApJ...741...68M NEATM
0.040 0.0800 0.0800 Nugent 2016AJ....152...63N NEATM
0.059 0.0190 0.0190 Masiero 2012ApJ...759L...8M NEATM
0.074 0.0450 0.0450 Masiero 2020PSJ.....1....5M NEATM
0.074 0.0470 0.0470 Masiero 2020PSJ.....1....5M NEATM
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
14.91 MPC-2022-01-18 MPC-2022-01-18 Phot