1999 WN18

1999WN18, 1998 HB112, 1998HB112, 41210, J98HB2B, J99W18N

All data for this body: [vot]

MPC data
Name (number) 1999 WN18 (41210)
a 2.35070
e 0.25993
i / sin(i) 10.7627 / 0.18674
q 1.73970
Q 2.96171
ω 249.6341
Node 130.9283
m 15.1585
n 0.2735
Epoch 2460800.5
nobs 2150
nopp 21
Years observed 1991-2024
rms 0.76
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.351
ep 0.218
sin(ip) 0.180
G 0.150
H 14.820
Mass
D 2.95 0.087
pV 0.359 0.0619
Value
Rotational Period 2.230
Period quality 1
Spectral Class S
Spectral Class Score 4.920
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3508 0.2181 0.1803 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.65 0.410 0.410 Masiero 2012ApJ...759L...8M NEATM
2.96 0.089 0.089 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.350 0.0687 0.0687 Masiero 2011ApJ...741...68M NEATM
0.397 0.1430 0.1430 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
14.82 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
2.232 1 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
S 0.820 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT