1981 ER2

1981ER2, 58111, J81E02R

All data for this body: [vot]

MPC data
Name (number) 1981 ER2 (58111)
a 3.10278
e 0.22093
i / sin(i) 21.5320 / 0.36702
q 2.41728
Q 3.78829
ω 337.3282
Node 190.4285
m 31.3786
n 0.1803
Epoch 2460800.5
nobs 1393
nopp 23
Years observed 1981-2025
rms 0.74
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.101
ep 0.345
sin(ip) 0.360
G 0.150
H 15.000
Mass
D
pV
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 3.991
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1012 0.3450 0.3600 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
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
15.00 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 C 0.0776 0.1260 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C C 0.1284 0.1260 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C C 0.3329 0.1260 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
D C 0.0721 0.1260 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S C 0.0469 0.1260 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S C 0.2030 0.1260 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S C 0.4153 0.1260 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
V C 0.0195 0.1260 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
V C 0.1067 0.1260 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT