1981 EA5

1981EA5, 27679, J81E05A

All data for this body: [vot]

MPC data
Name (number) 1981 EA5 (27679)
a 2.73875
e 0.15890
i / sin(i) 8.7011 / 0.15128
q 2.30357
Q 3.17393
ω 168.5796
Node 256.6839
m 2.2152
n 0.2175
Epoch 2460800.5
nobs 2171
nopp 22
Years observed 1979-2025
rms 0.74
Best values
[raw, vot]

Value Standard error
Parent Gefion (1272)
 
ap 2.739
ep 0.131
sin(ip) 0.165
G 0.150
H 14.500
Mass
D 3.56 1.146
pV 0.319 0.1597
Value
Rotational Period 13.767
Period quality 2
Spectral Class S
Spectral Class Score 5.970
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
1272 Gefion 0 Gefion Novakovic 2019EPSC...13.1671N HCM
1272 Gefion 516 Gefion -0.8600 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7393 0.1308 0.1650 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.56 1.146 1.146 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.319 0.1597 0.1597 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
14.50 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
13.7677 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
S 0.995 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT