Estonia

01541, 1916 GE, 1916GE, 1923 VE, 1923VE, 1930 FE, 1930FE, 1930 FV, 1930FV, 1939 CK, 1939CK, 1950 RG1, 1950RG1, 1950 SR, 1950SR, 1959 RF1, 1959RF1, J16G00E, J23V00E, J30F00E, J30F00V, J39C00K, J50R01G, J50S00R, J59R01F

All data for this body: [vot]

MPC data
Name (number) Estonia (1541)
a 2.76863
e 0.06863
i / sin(i) 4.8687 / 0.08487
q 2.57862
Q 2.95863
ω 190.5397
Node 1.3423
m 227.8186
n 0.2139
Epoch 2460800.5
nobs 10719
nopp 45
Years observed 1923-2025
rms 0.48
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.769
ep 0.108
sin(ip) 0.089
G 0.150
H 11.570
Mass
D 24.09 0.090
pV 0.119 0.0084
Value
Rotational Period 12.800
Period quality 3
Spectral Class X
Spectral Class Score 6.000
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7686 0.1082 0.0893 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
19.53 0.400 0.400 Masiero 2012ApJ...759L...8M NEATM
20.20 1.300 1.300 Tedesco 2002AJ....123.1056T STM
22.00 0.340 0.340 Masiero 2014ApJ...791..121M NEATM
23.89 1.350 1.350 Usui 2011PASJ...63.1117U NEATM
24.18 4.840 4.840 Ali-Lagoa 2018A&A...612A..85A NEATM
24.54 0.096 0.096 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.097 0.0390 0.0390 Ali-Lagoa 2018A&A...612A..85A NEATM
0.098 0.0129 0.0129 Masiero 2011ApJ...741...68M NEATM
0.120 0.0300 0.0300 Masiero 2014ApJ...791..121M NEATM
0.140 0.0160 0.0160 Masiero 2012ApJ...759L...8M NEATM
0.143 0.0200 0.0200 Tedesco 2002AJ....123.1056T STM
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
11.57 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
10.1 2- Synodic Behrend LCDB Lightcurve
12.86 2- Synodic Polakis 2021MPBu...48..158P Lightcurve
12.889 2 Synodic Dose 2022MPBu...49..218D Lightcurve
12.889 3 Synodic Pilcher 2022MPBu...49..250P Lightcurve
12.89 3 Synodic Pilcher 2022MPBu...49..185P Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
Cgx Xt None None Movis NIR Popescu 2018A&A...617A..12P PHOT
S P 0.490000 0.310000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
X 1.000 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
Xc Bus VIS Bus 2002Icar..158..146B SPEC