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	3.14390
e	0.20100
i / sin(i)	19.5373 / 0.33442
q	2.51199
Q	3.77581
ω	62.8189
Node	228.2716
m	175.8488
n	0.1768
Epoch	2460200.5

n_obs	4219
n_opp	58
Years observed	1919-2023
rms	0.58

Best values

	Value	Standard error
Parent

a_p	3.155
e_p	0.185
sin(i_p)	0.348

	Value	Standard error
G	0.150
H	8.210
Mass	7.851e+17	3.043e+17
D	70.96	0.681
pV	0.163	0.0114

Proper elements data

a_p	e_p	sin(i_p)	Author	Reference	Method
3.1550	0.1855	0.3485	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Oct-2022

Mass data

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

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

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

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.15			MPC-2023-12-94	MPC-2023-12-94	Phot

H data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
8.21			MPC-2023-12-04	MPC-2023-12-04	Phot