2001 SY271

2001SY271, 1999 JS16, 1999JS16, 55386, J99J16S, K01SR1Y

All data for this body: [vot]

MPC data
Name (number) 2001 SY271 (55386)
a 3.09234
e 0.14662
i / sin(i) 0.5225 / 0.00912
q 2.63894
Q 3.54574
ω 199.5752
Node 207.2065
m 104.9460
n 0.1812
Epoch 2460800.5
nobs 1797
nopp 21
Years observed 1990-2025
rms 0.80
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.098
ep 0.116
sin(ip) 0.025
G 0.150
H 14.420
Mass
D 8.22 0.307
pV 0.050 0.0082
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
24 Themis 0 Themis Novakovic 2019EPSC...13.1671N HCM
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.0980 0.1162 0.0253 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
8.19 0.315 0.315 Masiero 2011ApJ...741...68M NEATM
8.92 1.390 1.390 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.042 0.0130 0.0130 Masiero 2012ApJ...759L...8M NEATM
0.055 0.0106 0.0106 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
14.42 MPC-2023-12-04 MPC-2023-12-04 Phot