Erda

00894, 1907 JC, 1907JC, 1912 HD, 1912HD, 1918 LA, 1918LA, 1973 QB, 1973QB, J07J00C, J12H00D, J18L00A, J73Q00B

All data for this body: [vot]

MPC data
Name (number) Erda (894)
a 3.12177
e 0.11014
i / sin(i) 12.7246 / 0.22027
q 2.77795
Q 3.46560
ω 117.8172
Node 190.5391
m 110.8801
n 0.1787
Epoch 2460800.5
nobs 7389
nopp 52
Years observed 1907-2025
rms 0.58
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.115
ep 0.100
sin(ip) 0.226
G 0.150
H 9.750
Mass
D 37.25 0.371
pV 0.259 0.0031
Value
Rotational Period 4.689
Period quality 3
Spectral Class X
Spectral Class Score 16.000
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1146 0.1004 0.2257 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
28.31 1.540 1.540 Masiero 2012ApJ...759L...8M NEATM
31.67 2.526 2.526 Ryan&Woodward 2010AJ....140..933R IRAS-STM
32.72 3.270 3.270 Ali-Lagoa 2018A&A...612A..85A NEATM
34.61 1.016 1.016 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
36.54 1.800 1.800 Tedesco 2002AJ....123.1056T STM
37.84 0.450 0.450 Usui 2011PASJ...63.1117U NEATM
46.69 4.670 4.670 Ali-Lagoa 2018A&A...612A..85A NEATM
51.07 1.760 1.760 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.120 0.0066 0.0066 Masiero 2011ApJ...741...68M NEATM
0.125 0.0250 0.0250 Ali-Lagoa 2018A&A...612A..85A NEATM
0.230 0.0250 0.0250 Tedesco 2002AJ....123.1056T STM
0.254 0.0510 0.0510 Ali-Lagoa 2018A&A...612A..85A NEATM
0.256 0.0150 0.0150 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.306 0.0037 0.0037 Ryan&Woodward 2010AJ....140..933R IRAS-STM
0.319 0.0600 0.0600 Masiero 2012ApJ...759L...8M 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
9.75 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
4.6897 3 Synodic Higgins 2007MPBu...34...16H Lightcurve
4.69 2- Synodic Behrend LCDB Lightcurve
4.69 2 Synodic Stephens 2002MPBu...29....2S Lightcurve
4.7 2 Synodic Benishek 2022MPBu...49...38B Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
M 0.960000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
X Bus VIS Lazzaro 2004Icar..172..179L SPEC
X Tholen VIS Lazzaro 2004Icar..172..179L SPEC
X 1.000 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT