1998 XB99

1998XB99, 1973 UE4, 1973UE4, 2000 JB71, 2000JB71, 49431, J73U04E, J98X99B, K00J71B

All data for this body: [vot]

MPC data
Name (number) 1998 XB99 (49431)
a 2.57485
e 0.12624
i / sin(i) 12.2719 / 0.21255
q 2.24981
Q 2.89990
ω 180.9594
Node 232.2536
m 152.3670
n 0.2385
Epoch 2460800.5
nobs 3388
nopp 21
Years observed 1998-2025
rms 0.69
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.575
ep 0.121
sin(ip) 0.223
G 0.150
H 13.830
Mass
D 6.70 0.075
pV 0.135 0.0108
Value
Rotational Period 61.960
Period quality 2
Spectral Class L&D
Spectral Class Score 2.000
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5746 0.1215 0.2225 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.89 1.500 1.500 Nugent 2016AJ....152...63N NEATM
6.68 0.089 0.089 Masiero 2011ApJ...741...68M NEATM
6.75 0.140 0.140 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.120 0.0900 0.0900 Nugent 2016AJ....152...63N NEATM
0.135 0.0115 0.0115 Masiero 2011ApJ...741...68M NEATM
0.141 0.0330 0.0330 Masiero 2012ApJ...759L...8M 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
13.83 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
61.961 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
L&D D DeMeo-Carry VIS Choi 2023PSJ.....4...49C PHOT