Lena

00789, 1914 MA, 1914MA, 1970 CE, 1970CE, J14M00A, J70C00E

All data for this body: [vot]

MPC data
Name (number) Lena (789)
a 2.68567
e 0.14682
i / sin(i) 10.7762 / 0.18697
q 2.29136
Q 3.07998
ω 43.4118
Node 232.5579
m 62.4509
n 0.2239
Epoch 2460800.5
nobs 6784
nopp 43
Years observed 1915-2025
rms 0.56
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.686
ep 0.149
sin(ip) 0.199
G 0.150
H 11.360
Mass
D 22.99 0.124
pV 0.140 0.0108
Value
Rotational Period 5.840
Period quality 3
Spectral Class Xk
Spectral Class Score 21.000
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6858 0.1486 0.1992 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
15.16 4.220 4.220 Nugent 2016AJ....152...63N NEATM
20.56 0.340 0.340 Usui 2011PASJ...63.1117U NEATM
20.72 2.070 2.070 Ali-Lagoa 2018A&A...612A..85A NEATM
20.80 1.200 1.200 Hanus 2018Icar..309..297H RADIOMETRY_TPM
21.82 2.180 2.180 Ali-Lagoa 2018A&A...612A..85A NEATM
22.30 0.400 0.400 Hanus 2018Icar..309..297H RADIOMETRY_TPM
22.48 0.310 0.310 Masiero 2014ApJ...791..121M NEATM
23.87 0.162 0.162 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.131 0.0260 0.0260 Ali-Lagoa 2018A&A...612A..85A NEATM
0.137 0.0147 0.0147 Masiero 2011ApJ...741...68M NEATM
0.145 0.0290 0.0290 Ali-Lagoa 2018A&A...612A..85A NEATM
0.150 0.0300 0.0300 Masiero 2014ApJ...791..121M NEATM
0.230 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
11.36 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
22.0 0 Synodic Gil 1995RMxAA..31..143G Lightcurve
5.84188 2 Synodic Pal 2020ApJS..247...26P Lightcurve
5.842 3 Synodic Behrend LCDB Lightcurve
5.84233 2 Sidereal Durech 2023A&A...675A..24D Model
5.84234 2 Sidereal Hanus 2018Icar..309..297H Model
5.84239 2 Sidereal Durech 2016A&A...587A..48D Model
5.848 3 Synodic Behrend LCDB Lightcurve
5.85 2+ Synodic Shipley 2008MPBu...35...99S Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C C DeMeo-Carry VIS Choi 2023PSJ.....4...49C PHOT
M Tholen NIR Clark 2004AJ....128.3070C SPEC
M P 0.820000 0.180000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
X Bus VIS Bus 2002Icar..158..146B SPEC
X 1.000 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
Xk Bus-DeMeo VISNIR DeMeo 2009Icar..202..160D SPEC