1998 WD20

1998WD20, 1976 YS, 1976YS, 25296, J76Y00S, J98W20D

All data for this body: [vot]

MPC data
Name (number) 1998 WD20 (25296)
a 3.11052
e 0.17229
i / sin(i) 1.7621 / 0.03075
q 2.57460
Q 3.64644
ω 18.0831
Node 54.1390
m 287.0345
n 0.1797
Epoch 2460800.5
nobs 2451
nopp 24
Years observed 1976-2025
rms 0.75
Best values
[raw, vot]

Value Standard error
Parent Themis (24)
 
ap 3.112
ep 0.158
sin(ip) 0.022
G 0.150
H 13.740
Mass
D 9.73 0.025
pV 0.087 0.0108
Value
Rotational Period 5.006
Period quality 2
Spectral Class C
Spectral Class Score 4.241
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
24 Themis 0 Themis Novakovic 2019EPSC...13.1671N HCM
24 Themis 602 Themis -0.1900 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1118 0.1575 0.0224 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
9.40 0.044 0.044 Masiero 2011ApJ...741...68M NEATM
9.90 nan nan Ali-Lagoa 2016A&A...591A..14A NEATM
9.90 nan nan Ali-Lagoa 2016A&A...591A..14A NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.087 0.0108 0.0108 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
13.74 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
5.00629 2 Sidereal Durech 2023A&A...675A..24D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
B DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
C 0.89 Bus VIS Carvano 2010A&A...510A..43C PHOT
C C 0.4102 0.4102 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT