1981 EM5

1981EM5, 17378, J81E05M

All data for this body: [vot]

MPC data
Name (number) 1981 EM5 (17378)
a 3.09259
e 0.04434
i / sin(i) 8.1476 / 0.14172
q 2.95546
Q 3.22972
ω 188.9369
Node 271.5466
m 119.6301
n 0.1812
Epoch 2460800.5
nobs 2328
nopp 23
Years observed 1981-2025
rms 0.66
Best values
[raw, vot]

Value Standard error
Parent Eos (221)
 
ap 3.091
ep 0.063
sin(ip) 0.163
G 0.150
H 14.180
Mass
D 6.87 0.307
pV 0.113 0.0273
Value
Rotational Period 18.411
Period quality 2
Spectral Class X
Spectral Class Score 9.197
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
221 Eos 0 Eos Novakovic 2019EPSC...13.1671N HCM
221 Eos 606 Eos 0.7900 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.0908 0.0626 0.1625 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.87 0.307 0.307 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.113 0.0273 0.0273 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
14.18 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
18.4114 2 Synodic Pal 2020ApJS..247...26P Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
K DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
K X 0.2914 0.3410 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
L 0.54 Bus VIS Carvano 2010A&A...510A..43C PHOT
X 0.999 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
X X 0.5339 0.3410 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT