1989 SD4

1989SD4, 1989 TB4, 1989TB4, 2000 JZ28, 2000JZ28, 29162, J89S04D, J89T04B, K00J28Z

All data for this body: [vot]

MPC data
Name (number) 1989 SD4 (29162)
a 2.57942
e 0.04268
i / sin(i) 15.1739 / 0.26175
q 2.46932
Q 2.68951
ω 98.2143
Node 34.1931
m 102.3811
n 0.2379
Epoch 2460800.5
nobs 4208
nopp 20
Years observed 1989-2025
rms 0.57
Best values
[raw, vot]

Value Standard error
Parent Maria (170)
 
ap 2.579
ep 0.085
sin(ip) 0.254
G 0.150
H 14.120
Mass
D 5.12 0.570
pV 0.223 0.0670
Value
Rotational Period 6.500
Period quality 1
Spectral Class None
Spectral Class Score
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
1160 Illyria -1 Illyria -1.0000 Nesvorny 2024ApJS..274...25N HCM-2024
170 Maria 0 Maria Novakovic 2019EPSC...13.1671N HCM
170 Maria 506 Maria 0.2400 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5795 0.0845 0.2536 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.12 0.570 0.570 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.223 0.0670 0.0670 Masiero 2012ApJ...759L...8M NEATM
G data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.15 MPC-2023-12-94 MPC-2023-12-94 Phot
H data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
14.12 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
6.505 1 Synodic Waszczak 2015AJ....150...75W Lightcurve