1999 SY8

1999SY8, 1991 RZ22, 1991RZ22, 40724, J91R22Z, J99S08Y

All data for this body: [vot]

MPC data
Name (number) 1999 SY8 (40724)
a 2.55772
e 0.10406
i / sin(i) 13.5640 / 0.23453
q 2.29155
Q 2.82388
ω 136.8616
Node 5.4026
m 295.4832
n 0.2409
Epoch 2460800.5
nobs 3295
nopp 23
Years observed 1991-2025
rms 0.67
Best values
[raw, vot]

Value Standard error
Parent Eunomia (15)
 
ap 2.556
ep 0.152
sin(ip) 0.233
G 0.150
H 13.720
Mass
D 5.32 0.050
pV 0.302 0.0284
Value
Rotational Period
Period quality None
Spectral Class None
Spectral Class Score
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
15 Eunomia 0 Eunomia Novakovic 2019EPSC...13.1671N HCM
15 Eunomia 502 Eunomia -0.9100 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5562 0.1519 0.2333 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.85 0.137 0.137 Masiero 2011ApJ...741...68M NEATM
5.39 0.054 0.054 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.266 0.0439 0.0439 Masiero 2011ApJ...741...68M NEATM
0.328 0.0372 0.0372 Masiero 2011ApJ...741...68M 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
13.72 MPC-2023-12-04 MPC-2023-12-04 Phot