1981 EM45

1981EM45, 27697, J81E45M

All data for this body: [vot]

MPC data
Name (number) 1981 EM45 (27697)
a 2.74562
e 0.10059
i / sin(i) 10.6899 / 0.18549
q 2.46943
Q 3.02181
ω 3.6534
Node 330.9679
m 109.1845
n 0.2166
Epoch 2460800.5
nobs 1527
nopp 24
Years observed 1960-2025
rms 0.81
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.743
ep 0.076
sin(ip) 0.194
G 0.150
H 14.970
Mass
D 3.03 0.195
pV 0.231 0.0314
Value
Rotational Period 6.800
Period quality 2
Spectral Class S
Spectral Class Score 11.741
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7431 0.0761 0.1944 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.03 0.195 0.195 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.231 0.0314 0.0314 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
14.97 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
6.89 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
D 0.288 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
D S 0.1829 0.6450 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.21 Bus VIS Carvano 2010A&A...510A..43C PHOT
S Ad None None Movis NIR Popescu 2018A&A...617A..12P PHOT
S S 0.6343 0.6450 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.7525 0.6450 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT