1999 XJ209

1999XJ209, 1998 QA54, 1998QA54, 41320, J98Q54A, J99XK9J

All data for this body: [vot]

MPC data
Name (number) 1999 XJ209 (41320)
a 2.98401
e 0.09380
i / sin(i) 10.7138 / 0.18590
q 2.70410
Q 3.26392
ω 338.7278
Node 17.8102
m 294.2765
n 0.1912
Epoch 2460200.5
nobs 2370
nopp 22
Years observed 1991-2023
rms 0.63
Best values
[raw, vot]

Value Standard error
Parent Eos (221)
 
ap 2.984
ep 0.065
sin(ip) 0.182
Value Standard error
G 0.150
H 13.470
Mass
D 7.04 0.190
pV 0.205 0.0388
Rotational Period
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
221 Eos 606 Eos -0.6800 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.9836 0.0652 0.1820 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Oct-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
7.04 0.190 0.190 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.205 0.0388 0.0388 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
13.47 MPC-2023-12-04 MPC-2023-12-04 Phot