1999 XB98

1999XB98, 1989 WE5, 1989WE5, 49854, J89W05E, J99X98B

All data for this body: [vot]

MPC data
Name (number) 1999 XB98 (49854)
a 2.21498
e 0.07049
i / sin(i) 6.0312 / 0.10507
q 2.05885
Q 2.37112
ω 196.1938
Node 263.9925
m 235.9191
n 0.2990
Epoch 2460800.5
nobs 1955
nopp 20
Years observed 1989-2025
rms 0.74
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.215
ep 0.122
sin(ip) 0.113
G 0.150
H 15.330
Mass
D 2.77 0.115
pV 0.253 0.0275
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 13.734
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2153 0.1218 0.1126 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.77 0.115 0.115 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.253 0.0275 0.0275 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
15.33 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
Q 0.82 Bus VIS Carvano 2010A&A...510A..43C PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S S 0.9567 0.9770 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.9989 0.9770 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT