1981 EC15

1981EC15, C9442, J81E15C

All data for this body: [vot]

MPC data
Name (number) 1981 EC15 (129442)
a 2.57332
e 0.18550
i / sin(i) 5.4947 / 0.09575
q 2.09596
Q 3.05068
ω 191.0896
Node 337.7017
m 260.1614
n 0.2388
Epoch 2460800.5
nobs 952
nopp 19
Years observed 1981-2024
rms 0.82
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.571
ep 0.247
sin(ip) 0.103
G 0.150
H 16.000
Mass
D 2.06 0.219
pV 0.125 0.0396
Value
Rotational Period 15.600
Period quality 2
Spectral Class S
Spectral Class Score 8.316
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5706 0.2473 0.1035 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
1.81 0.595 0.595 Masiero 2011ApJ...741...68M NEATM
2.10 0.236 0.236 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.119 0.0432 0.0432 Masiero 2011ApJ...741...68M NEATM
0.159 0.0998 0.0998 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
16.00 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
15.67 2 Synodic Binzel 1992Icar...99..225B Lightcurve
3.72 Synodic Erasmus 2019ApJS..242...15E Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S 0.404 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S 0.982000 Bus-DeMeo VIS Erasmus 2019ApJS..242...15E PHOT