1999 FW31

1999FW31, 29859, J99F31W

All data for this body: [vot]

MPC data
Name (number) 1999 FW31 (29859)
a 2.68132
e 0.20633
i / sin(i) 11.4710 / 0.19887
q 2.12809
Q 3.23455
ω 298.3437
Node 214.8857
m 10.9399
n 0.2245
Epoch 2460800.5
nobs 3137
nopp 22
Years observed 1997-2025
rms 0.74
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.680
ep 0.239
sin(ip) 0.217
G 0.150
H 14.080
Mass
D 8.90 0.124
pV 0.088 0.0131
Value
Rotational Period
Period quality None
Spectral Class B
Spectral Class Score 7.454
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6800 0.2386 0.2168 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.70 1.593 1.593 Masiero 2017AJ....154..168M NEATM
8.18 2.410 2.410 Nugent 2016AJ....152...63N NEATM
8.91 0.125 0.125 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.060 0.0700 0.0700 Nugent 2016AJ....152...63N NEATM
0.088 0.0136 0.0136 Masiero 2011ApJ...741...68M NEATM
0.104 0.0695 0.0695 Masiero 2017AJ....154..168M 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
14.08 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
B B 0.3569 0.2120 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
B B 0.3668 0.2120 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
B B 0.5186 0.2120 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
C 0.43 Bus VIS Carvano 2010A&A...510A..43C PHOT
C B 0.0765 0.2120 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C B 0.3637 0.2120 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X B 0.4580 0.2120 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT