1999 XT169

1999XT169, 1989 ER1, 1989ER1, 1993 GS, 1993GS, 49911, J89E01R, J93G00S, J99XG9T

All data for this body: [vot]

MPC data
Name (number) 1999 XT169 (49911)
a 2.42110
e 0.19664
i / sin(i) 4.9053 / 0.08551
q 1.94502
Q 2.89717
ω 77.7682
Node 44.0169
m 89.3349
n 0.2616
Epoch 2460200.5
nobs 2229
nopp 20
Years observed 1989-2023
rms 0.60
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.418
ep 0.224
sin(ip) 0.078
Value Standard error
G 0.150
H 14.530
Mass
D 4.23 0.176
pV 0.206 0.0238
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4184 0.2239 0.0776 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Oct-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.99 0.730 0.730 Nugent 2016AJ....152...63N NEATM
4.22 0.293 0.293 Masiero 2011ApJ...741...68M NEATM
4.36 0.230 0.230 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.195 0.0430 0.0430 Masiero 2012ApJ...759L...8M NEATM
0.208 0.0295 0.0295 Masiero 2011ApJ...741...68M NEATM
0.250 0.1100 0.1100 Nugent 2016AJ....152...63N 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
14.53 MPC-2023-12-04 MPC-2023-12-04 Phot
Period data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
12.52 Pravec LCDB Lightcurve