Massar

18946, 1979 WH1, 1979WH1, 1992 EO27, 1992EO27, 1995 UZ42, 1995UZ42, 2000 QM75, 2000QM75, J79W01H, J92E27O, J95U42Z, K00Q75M

All data for this body: [vot]

MPC data
Name (number) Massar (18946)
a 3.04838
e 0.17560
i / sin(i) 0.5170 / 0.00902
q 2.51308
Q 3.58367
ω 44.5929
Node 340.5577
m 88.6140
n 0.1852
Epoch 2460200.5
nobs 1717
nopp 26
Years observed 1979-2023
rms 0.69
Best values
[raw, vot]

Value Standard error
Parent Themis (24)
 
ap 3.051
ep 0.140
sin(ip) 0.028
Value Standard error
G 0.150
H 14.340
Mass
D 8.67 0.227
pV 0.055 0.0101
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
24 Themis 602 Themis -0.5300 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.0510 0.1401 0.0275 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Oct-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
7.37 2.103 2.103 Masiero 2017AJ....154..168M NEATM
8.68 0.228 0.228 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.054 0.0105 0.0105 Masiero 2011ApJ...741...68M NEATM
0.068 0.0372 0.0372 Masiero 2017AJ....154..168M 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
14.34 MPC-2023-12-04 MPC-2023-12-04 Phot