Williamcooke

03894, 1978 EM4, 1978EM4, 1980 PQ2, 1980PQ2, 1980 RF3, 1980RF3, 1987 DY6, 1987DY6, 1989 WM6, 1989WM6, J78E04M, J80P02Q, J80R03F, J87D06Y, J89W06M

All data for this body: [vot]

MPC data
Name (number) Williamcooke (3894)
a 2.62465
e 0.17242
i / sin(i) 13.3562 / 0.23100
q 2.17211
Q 3.07720
ω 188.0578
Node 162.9930
m 169.9845
n 0.2318
Epoch 2460800.5
nobs 4816
nopp 29
Years observed 1978-2025
rms 0.65
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.626
ep 0.140
sin(ip) 0.219
G 0.150
H 12.140
Mass
D 9.06 0.048
pV 0.356 0.0274
Value
Rotational Period 4.100
Period quality 3
Spectral Class S
Spectral Class Score 47.135
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6258 0.1399 0.2192 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
7.95 0.710 0.710 Usui 2011PASJ...63.1117U NEATM
8.46 1.690 1.690 Ali-Lagoa 2018A&A...612A..85A NEATM
8.78 0.080 0.080 Masiero 2014ApJ...791..121M NEATM
8.86 0.380 0.380 Masiero 2012ApJ...759L...8M NEATM
9.24 0.062 0.062 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.339 0.0698 0.0698 Masiero 2011ApJ...741...68M NEATM
0.357 0.0380 0.0380 Masiero 2012ApJ...759L...8M NEATM
0.360 0.0500 0.0500 Masiero 2014ApJ...791..121M NEATM
0.399 0.1600 0.1600 Ali-Lagoa 2018A&A...612A..85A 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
12.14 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
3.1 2 Synodic Aznar 2015MPBu...42....4M Lightcurve
4.16 3- Synodic Stephens 2019MPBu...46...66S Lightcurve
4.173 2 Synodic Stephens 2022MPBu...49..314S Lightcurve
8.3343 2 Synodic Behrend LCDB Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S Tholen VIS Lazzaro 1999Icar..142..445L SPEC
S Tholen VIS Lazzaro 2004Icar..172..179L SPEC
S Tholen VISNIR Nathues 2010Icar..208..252N SPEC+PHOT
S 0.930000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
S 1.000 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S 0.7534 0.7380 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.9945 0.7380 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.9996 0.7380 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
SI Bus VIS Lazzaro 2004Icar..172..179L SPEC