Willhayes

16258, 1978 WJ17, 1978WJ17, 2000 JP13, 2000JP13, J78W17J, K00J13P

All data for this body: [vot]

MPC data
Name (number) Willhayes (16258)
a 2.46668
e 0.12874
i / sin(i) 8.6299 / 0.15005
q 2.14913
Q 2.78423
ω 297.8808
Node 57.1609
m 46.6336
n 0.2544
Epoch 2460800.5
nobs 3361
nopp 21
Years observed 1978-2025
rms 0.65
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.466
ep 0.095
sin(ip) 0.137
G 0.150
H 14.730
Mass
D 4.06 0.127
pV 0.129 0.0208
Value
Rotational Period 3.176
Period quality 2
Spectral Class X
Spectral Class Score 3.853
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4660 0.0948 0.1372 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.06 0.127 0.127 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.129 0.0208 0.0208 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
14.73 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
3.17561 2 Sidereal Athanasopoulos 2024A%26A...690A.215A Model
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
X 0.42 Bus VIS Carvano 2010A&A...510A..43C PHOT
X X 0.2359 0.2590 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X X 0.2662 0.2590 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT