DeMeo

08070, 1981 EM30, 1981EM30, J81E30M

All data for this body: [vot]

MPC data
Name (number) DeMeo (8070)
a 2.75942
e 0.24837
i / sin(i) 2.6431 / 0.04611
q 2.07407
Q 3.44478
ω 236.2487
Node 137.2611
m 21.6662
n 0.2150
Epoch 2460800.5
nobs 2647
nopp 28
Years observed 1978-2025
rms 0.75
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.758
ep 0.211
sin(ip) 0.032
G 0.150
H 14.150
Mass
D 8.05 0.073
pV 0.078 0.0144
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 5.922
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7584 0.2108 0.0322 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.40 1.800 1.800 Nugent 2016AJ....152...63N NEATM
7.20 2.710 2.710 Nugent 2016AJ....152...63N NEATM
7.82 2.190 2.190 Masiero 2021PSJ.....2..162M NEATM
8.05 0.074 0.074 Masiero 2011ApJ...741...68M NEATM
8.36 0.650 0.650 Usui 2011PASJ...63.1117U NEATM
8.78 1.760 1.760 Ali-Lagoa 2018A&A...612A..85A NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.066 0.0260 0.0260 Ali-Lagoa 2018A&A...612A..85A NEATM
0.080 0.0600 0.0600 Nugent 2016AJ....152...63N NEATM
0.082 0.0200 0.0200 Masiero 2011ApJ...741...68M NEATM
0.091 0.0360 0.0580 Masiero 2021PSJ.....2..162M NEATM
0.100 0.1000 0.1000 Nugent 2016AJ....152...63N 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
14.15 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
S 0.987 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT