Astraea

00005, 1845 XA, 1845XA, 1969 SE, 1969SE, I45X00A, J69S00E

All data for this body: [vot]

MPC data
Name (number) Astraea (5)
a 2.57676
e 0.18744
i / sin(i) 5.3589 / 0.09339
q 2.09377
Q 3.05975
ω 359.3177
Node 141.4535
m 86.2472
n 0.2383
Epoch 2460800.5
nobs 3280
nopp 89
Years observed 1845-2025
rms 0.79
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.577
ep 0.185
sin(ip) 0.080
G 0.150
H 6.990
Mass 2.090e+18 2.366e+17
D 110.18 1.023
pV 0.242 0.0108
Value
Rotational Period 16.800
Period quality 3
Spectral Class S
Spectral Class Score 40.304
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5770 0.1851 0.0795 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Mass data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
1.2600e+19 4.6100e+18 4.6100e+18 Zielenbach 2011AJ....142..120Z Deflec
2.2000e+14 4.2900e+17 4.2900e+17 Fienga 2014arXiv1405.0484F Ephem
2.3800e+18 Folkner 2009IPNPR.178C...1F Ephem
2.5300e+18 Folkner 2014IPNPR.196C...1F Ephem
2.7160e+18 3.2600e+17 3.2600e+17 Fienga 2020MNRAS.492..589F Ephem
3.3900e+18 6.9200e+17 6.9200e+17 Zielenbach 2011AJ....142..120Z Deflec
8.5000e+18 2.9000e+18 2.9000e+18 Zielenbach 2011AJ....142..120Z Deflec
8.6100e+18 2.2600e+18 2.2600e+18 Zielenbach 2011AJ....142..120Z Deflec
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
104.53 10.450 10.450 Ali-Lagoa 2018A&A...612A..85A NEATM
105.40 10.540 10.540 Ali-Lagoa 2018A&A...612A..85A NEATM
106.70 3.140 3.140 Masiero 2012ApJ...759L...8M NEATM
108.29 3.700 3.700 Masiero 2014ApJ...791..121M NEATM
110.00 14.000 14.000 Hanus 2013Icar..226.1045H AO/LC
110.77 1.370 1.370 Usui 2011PASJ...63.1117U NEATM
114.00 4.000 4.000 Hanus 2017A&A...601A.114H AO/OCCULT/LC
115.00 6.000 6.000 Durech 2011Icar..214..652D OCCULT
115.00 9.353 9.353 Masiero 2011ApJ...741...68M NEATM
119.07 6.500 6.500 Tedesco 2002AJ....123.1056T STM
133.73 6.468 6.468 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
97.97 3.623 3.623 Ryan&Woodward 2010AJ....140..933R IRAS-STM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.180 0.0175 0.0175 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.227 0.0270 0.0270 Tedesco 2002AJ....123.1056T STM
0.245 0.0509 0.0509 Masiero 2011ApJ...741...68M NEATM
0.270 0.0300 0.0300 Masiero 2014ApJ...791..121M NEATM
0.282 0.0500 0.0500 Masiero 2012ApJ...759L...8M NEATM
0.292 0.0580 0.0580 Ali-Lagoa 2018A&A...612A..85A NEATM
0.297 0.0590 0.0590 Ali-Lagoa 2018A&A...612A..85A NEATM
0.337 0.0256 0.0256 Ryan&Woodward 2010AJ....140..933R IRAS-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
6.99 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
16.8 Synodic Lagerkvist 1989A&AS...78..519L Lightcurve
16.8006 2 Sidereal De Angelis 1995P&SS...43..649D Model
16.8006 2 Sidereal Erikson 1993Icar..103...62E Model
16.8006 2 Sidereal Hanus 2017A&A...601A.114H Model
16.80061 2 Sidereal Durech 2009A&A...493..291D Model
16.80061 2 Sidereal Durech 2011Icar..214..652D Model
16.80061 2 Sidereal Hanus 2013Icar..226.1045H Model
16.8008 2 Sidereal Durech 2023A&A...675A..24D Model
16.800829 2 Sidereal Higley 2008MPBu...35...63H Model
16.801 2+ Synodic Lopez 2005P&SS...53.1147L Lightcurve
16.806 3 Synodic Chang LCDB Lightcurve
16.812 2- Synodic Riccioli 2001P&SS...49..657R Lightcurve
16.8121 2 Sidereal Taylor 1978AJ.....83..201T Model
16.815 3 Synodic Shevchenko 2002Icar..155..365S Lightcurve
7.27 0 Synodic Padova 1921MmSAI...2...82P Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S Bus-DeMeo VISNIR DeMeo 2009Icar..202..160D SPEC
S Bus VIS Bus 2002Icar..158..146B SPEC
S Tholen VIS Clark 1995Icar..113..387C PHOT
S 0.884 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S 1.000000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
Sp Howell VISNIR Howell 1994JGR....9910847H PHOT