1981 ES3

1981ES3, 30734, J81E03S

All data for this body: [vot]

MPC data
Name (number) 1981 ES3 (30734)
a 2.65720
e 0.17811
i / sin(i) 11.5856 / 0.20083
q 2.18392
Q 3.13047
ω 84.9819
Node 307.7730
m 203.5422
n 0.2275
Epoch 2460800.5
nobs 2337
nopp 21
Years observed 1981-2025
rms 0.70
Best values
[raw, vot]

Value Standard error
Parent Eunomia (15)
 
ap 2.657
ep 0.141
sin(ip) 0.222
G 0.150
H 13.960
Mass
D 4.62 0.109
pV 0.228 0.0242
Value
Rotational Period 3.770
Period quality 2
Spectral Class S
Spectral Class Score 5.996
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
15 Eunomia 0 Eunomia Novakovic 2019EPSC...13.1671N HCM
15 Eunomia 502 Eunomia 0.1200 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6566 0.1414 0.2219 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.62 0.109 0.109 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.228 0.0242 0.0242 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
13.96 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
3.776 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
3.77682 2 Sidereal Durech 2023A&A...675A..24D Model
3.776843 2 Sidereal Durech 2018A&A...617A..57D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S S 0.9994 0.9994 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT