1981 EJ40

1981EJ40, 1988 RH, 1988RH, 46536, J81E40J, J88R00H

All data for this body: [vot]

MPC data
Name (number) 1981 EJ40 (46536)
a 2.78193
e 0.32339
i / sin(i) 32.6113 / 0.53894
q 1.88227
Q 3.68159
ω 57.4486
Node 346.0724
m 296.8708
n 0.2124
Epoch 2460800.5
nobs 1188
nopp 18
Years observed 1981-2025
rms 0.68
Best values
[raw, vot]

Value Standard error
Parent Pallas (2)
 
ap 2.781
ep 0.263
sin(ip) 0.547
G 0.150
H 14.600
Mass
D 5.75 0.698
pV 0.084 0.0279
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 5.988
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
2 Pallas 0 Pallas Novakovic 2019EPSC...13.1671N HCM
2 Pallas 801 Pallas Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7808 0.2626 0.5466 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.79 0.987 0.987 Masiero 2017AJ....154..168M NEATM
6.35 1.650 1.650 Masiero 2020PSJ.....1....5M NEATM
6.91 1.230 1.230 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.068 0.0400 0.0400 Masiero 2020PSJ.....1....5M NEATM
0.077 0.0470 0.0470 Masiero 2012ApJ...759L...8M NEATM
0.147 0.0690 0.0690 Masiero 2017AJ....154..168M 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
14.60 MPC-2023-12-04 MPC-2023-12-04 Phot
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C 0.998 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT