Ara

00849, 1912 CD, 1912CD, 1915 UB, 1915UB, 1935 FU, 1935FU, 1960 WN, 1960WN, J12C00D, J15U00B, J35F00U, J60W00N

All data for this body: [vot]

MPC data
Name (number) Ara (849)
a 3.14551
e 0.20082
i / sin(i) 19.5365 / 0.33441
q 2.51383
Q 3.77719
ω 62.6451
Node 228.2740
m 282.1135
n 0.1767
Epoch 2460800.5
nobs 5185
nopp 59
Years observed 1919-2025
rms 0.72
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.155
ep 0.185
sin(ip) 0.348
G 0.150
H 8.140
Mass 7.851e+17 3.043e+17
D 70.96 0.681
pV 0.163 0.0114
Value
Rotational Period 4.110
Period quality 3
Spectral Class D
Spectral Class Score 18.000
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1550 0.1855 0.3485 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Mass data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.9600e+17 Folkner 2014IPNPR.196C...1F Ephem
8.7418e+17 4.3035e+17 4.3035e+17 Fienga INPOP19a Ephem
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
58.53 5.850 5.850 Ali-Lagoa 2018A&A...612A..85A NEATM
59.92 1.090 1.090 Usui 2011PASJ...63.1117U NEATM
61.82 3.300 3.300 Tedesco 2002AJ....123.1056T STM
64.00 12.800 12.800 Ali-Lagoa 2018A&A...612A..85A NEATM
73.00 3.000 3.000 Hanus 2017A&A...601A.114H AO/OCCULT/LC
74.00 2.890 2.890 Masiero 2012ApJ...759L...8M NEATM
76.00 14.000 14.000 Durech 2011Icar..214..652D OCCULT
80.76 1.130 1.130 Masiero 2014ApJ...791..121M NEATM
84.42 2.447 2.447 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.116 0.0163 0.0163 Masiero 2011ApJ...741...68M NEATM
0.130 0.0400 0.0400 Masiero 2014ApJ...791..121M NEATM
0.186 0.0230 0.0230 Masiero 2012ApJ...759L...8M NEATM
0.250 0.1000 0.1000 Ali-Lagoa 2018A&A...612A..85A NEATM
0.266 0.0310 0.0310 Tedesco 2002AJ....123.1056T STM
0.299 0.0600 0.0600 Ali-Lagoa 2018A&A...612A..85A 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
8.14 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
4.123 2 Synodic Behrend LCDB Lightcurve
0.97 Synodic Erasmus 2018ApJS..237...19E Lightcurve
0.97 Synodic Erasmus 2019ApJS..242...15E Lightcurve
4.11435 2 Synodic Pal 2020ApJS..247...26P Lightcurve
4.116 3 Synodic Harris 1992Icar...95..115H Lightcurve
4.116 3 Synodic Marciniak 2009A&A...498..313M Lightcurve
4.11622 3 Synodic Behrend LCDB Lightcurve
4.11639 2 Sidereal Durech LCDB Model
4.116391 2 Sidereal Durech 2009A&A...493..291D Model
4.116391 2 Sidereal Durech 2011Icar..214..652D Model
4.116391 2 Sidereal Hanus 2017A&A...601A.114H Model
4.1165 3 Synodic Behrend LCDB Lightcurve
4.1168 3 Synodic Schmidt 2017MPBu...44..191S Lightcurve
4.117 3 Synodic Gandolfi 2009P&SS...57....1G Lightcurve
4.1176 3 Synodic Behrend LCDB Lightcurve
4.119 3 Synodic Sioulas 2022MPBu...49...69S Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
D Bus-DeMeo NIR Fornasier 2010Icar..210..655F SPEC
M Howell VISNIR Howell 1994JGR....9910847H PHOT
M Tholen VIS Clark 1995Icar..113..387C PHOT
X 0.959 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
X C 0.855000 0.135000 Bus-DeMeo VIS Erasmus 2018ApJS..237...19E PHOT
Z S 0.530000 0.470000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC