1998 SR139

1998SR139, 1999 XQ90, 1999XQ90, 44413, J98SD9R, J99X90Q

All data for this body: [vot]

MPC data
Name (number) 1998 SR139 (44413)
a 2.74922
e 0.13236
i / sin(i) 6.1300 / 0.10679
q 2.38534
Q 3.11311
ω 312.4524
Node 274.9429
m 93.5943
n 0.2162
Epoch 2460800.5
nobs 3239
nopp 23
Years observed 1991-2025
rms 0.66
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.749
ep 0.164
sin(ip) 0.128
G 0.150
H 13.810
Mass
D 9.97 0.067
pV 0.065 0.0051
Value
Rotational Period 9.523
Period quality 2
Spectral Class X
Spectral Class Score 11.092
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7495 0.1642 0.1276 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
10.24 0.167 0.167 Masiero 2011ApJ...741...68M NEATM
8.77 1.810 1.810 Masiero 2021PSJ.....2..162M NEATM
9.92 0.073 0.073 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.064 0.0058 0.0058 Masiero 2011ApJ...741...68M NEATM
0.067 0.0300 0.0540 Masiero 2021PSJ.....2..162M NEATM
0.070 0.0112 0.0112 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
13.81 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
9.5195 2 Sidereal Durech 2023A&A...675A..24D Model
9.52305 2 Synodic Pal 2020ApJS..247...26P Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
C 0.83 Bus VIS Carvano 2010A&A...510A..43C PHOT
Cgx Kl None None Movis NIR Popescu 2018A&A...617A..12P PHOT
X 0.853 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
X X 0.1910 0.2560 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X X 0.3936 0.2560 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X X 0.4110 0.2560 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT