Erna

00406, 1895 QA, 1895QA, 1903 DA, 1903DA, 1905 OB, 1905OB, 1949 KD1, 1949KD1, I95Q00A, J03D00A, J05O00B, J49K01D

All data for this body: [vot]

MPC data
Name (number) Erna (406)
a 2.91697
e 0.17775
i / sin(i) 4.1919 / 0.07310
q 2.39848
Q 3.43547
ω 37.9434
Node 315.4368
m 2.0141
n 0.1978
Epoch 2460800.5
nobs 7450
nopp 57
Years observed 1903-2025
rms 0.58
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.916
ep 0.145
sin(ip) 0.091
G 0.150
H 10.430
Mass
D 46.54 0.222
pV 0.056 0.0021
Value
Rotational Period 8.780
Period quality 3
Spectral Class X
Spectral Class Score 4.392
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.9160 0.1449 0.0909 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
41.52 10.790 10.790 Nugent 2016AJ....152...63N NEATM
41.69 11.070 11.070 Masiero 2021PSJ.....2..162M NEATM
44.33 1.859 1.859 Ryan&Woodward 2010AJ....140..933R IRAS-STM
44.60 4.460 4.460 Ali-Lagoa 2018A&A...612A..85A NEATM
46.02 0.730 0.730 Usui 2011PASJ...63.1117U NEATM
46.02 0.830 0.830 Masiero 2014ApJ...791..121M NEATM
46.15 0.732 0.732 Masiero 2011ApJ...741...68M NEATM
46.27 0.310 0.310 Masiero 2012ApJ...759L...8M NEATM
47.70 0.510 0.510 Masiero 2012ApJ...759L...8M NEATM
48.54 4.850 4.850 Ali-Lagoa 2018A&A...612A..85A NEATM
49.19 1.700 1.700 Tedesco 2002AJ....123.1056T STM
53.63 3.208 3.208 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.045 0.0052 0.0052 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.052 0.0040 0.0040 Tedesco 2002AJ....123.1056T STM
0.056 0.0100 0.0100 Masiero 2012ApJ...759L...8M NEATM
0.059 0.0130 0.0130 Masiero 2012ApJ...759L...8M NEATM
0.059 0.0047 0.0047 Masiero 2011ApJ...741...68M NEATM
0.060 0.0100 0.0100 Masiero 2014ApJ...791..121M NEATM
0.062 0.0120 0.0120 Ali-Lagoa 2018A&A...612A..85A NEATM
0.065 0.0055 0.0055 Ryan&Woodward 2010AJ....140..933R IRAS-STM
0.074 0.0150 0.0150 Ali-Lagoa 2018A&A...612A..85A NEATM
0.078 0.0290 0.0470 Masiero 2021PSJ.....2..162M NEATM
0.080 0.0300 0.0300 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
10.43 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
8.7893 3 Synodic Behrend LCDB Lightcurve
8.79 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
8.79079 2 Sidereal Hanus 2013A&A...551A..67H Model
8.7908 2 Sidereal Durech 2023A&A...675A..24D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
X 0.732 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT