1999 XJ209

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

All data for this body: [vot]

MPC data
Name (number) 1999 XJ209 (41320)
a 2.98461
e 0.09399
i / sin(i) 10.7114 / 0.18586
q 2.70407
Q 3.26514
ω 339.0966
Node 17.8002
m 48.6862
n 0.1911
Epoch 2460800.5
nobs 2939
nopp 24
Years observed 1991-2025
rms 0.69
Best values
[raw, vot]

Value Standard error
Parent Eos (221)
 
ap 2.984
ep 0.065
sin(ip) 0.182
G 0.150
H 13.430
Mass
D 7.04 0.190
pV 0.205 0.0388
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 5.154
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-Nov-2024
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
13.43 MPC-2023-12-04 MPC-2023-12-04 Phot
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S 0.859 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT