1999 WF4

1999WF4, 1998 QJ78, 1998QJ78, 41201, J98Q78J, J99W04F

All data for this body: [vot]

MPC data
Name (number) 1999 WF4 (41201)
a 3.09793
e 0.04591
i / sin(i) 9.0237 / 0.15684
q 2.95570
Q 3.24016
ω 154.5978
Node 222.6465
m 295.5879
n 0.1808
Epoch 2460800.5
nobs 1487
nopp 24
Years observed 1991-2025
rms 0.75
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.096
ep 0.022
sin(ip) 0.170
G 0.150
H 14.470
Mass
D
pV
Value
Rotational Period
Period quality None
Spectral Class K
Spectral Class Score 2.000
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.0962 0.0223 0.1697 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
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
14.47 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
K DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.324 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
X X 0.2727 0.2727 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
XD 0.14 Bus VIS Carvano 2010A&A...510A..43C PHOT