Boulder

08489, 1976 GY8, 1976GY8, 1989 TA3, 1989TA3, 1993 LH2, 1993LH2, J76G08Y, J89T03A, J93L02H

All data for this body: [vot]

MPC data
Name (number) Boulder (8489)
a 3.15480
e 0.11642
i / sin(i) 5.8313 / 0.10160
q 2.78751
Q 3.52209
ω 100.7303
Node 146.2302
m 152.8159
n 0.1759
Epoch 2460200.5
nobs 2775
nopp 26
Years observed 1976-2023
rms 0.62
Best values
[raw, vot]

Value Standard error
Parent Hygiea (10)
 
ap 3.138
ep 0.147
sin(ip) 0.092
Value Standard error
G 0.150
H 13.480
Mass
D 11.21 0.117
pV 0.081 0.0179
Rotational Period
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
10 Hygiea 601 Hygiea Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1381 0.1466 0.0917 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Oct-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
11.21 0.117 0.117 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.081 0.0179 0.0179 Masiero 2011ApJ...741...68M 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
13.48 MPC-2023-12-04 MPC-2023-12-04 Phot