1981 EA22

1981EA22, 1978 RQ11, 1978RQ11, 29102, J78R11Q, J81E22A

All data for this body: [vot]

MPC data
Name (number) 1981 EA22 (29102)
a 2.73778
e 0.02443
i / sin(i) 12.7023 / 0.21989
q 2.67089
Q 2.80467
ω 133.5980
Node 170.2032
m 146.6232
n 0.2176
Epoch 2460800.5
nobs 1944
nopp 23
Years observed 1951-2025
rms 0.76
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.736
ep 0.028
sin(ip) 0.217
G 0.150
H 14.670
Mass
D 7.64 0.088
pV 0.059 0.0087
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 5.244
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7355 0.0279 0.2173 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
10.49 3.250 3.250 Masiero 2012ApJ...759L...8M NEATM
7.63 0.088 0.088 Masiero 2011ApJ...741...68M NEATM
9.51 4.070 4.070 Masiero 2021PSJ.....2..162M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.028 0.0160 0.0160 Masiero 2012ApJ...759L...8M NEATM
0.031 0.0200 0.0540 Masiero 2021PSJ.....2..162M NEATM
0.076 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
14.67 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 0.874 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT