1999 JR39

1999JR39, 1998 FF90, 1998FF90, 29929, J98F90F, J99J39R

All data for this body: [vot]

MPC data
Name (number) 1999 JR39 (29929)
a 3.14030
e 0.15299
i / sin(i) 6.8617 / 0.11947
q 2.65987
Q 3.62073
ω 312.8355
Node 42.1415
m 122.3703
n 0.1771
Epoch 2460800.5
nobs 2981
nopp 23
Years observed 1998-2025
rms 0.73
Best values
[raw, vot]

Value Standard error
Parent Hygiea (10)
 
ap 3.146
ep 0.118
sin(ip) 0.109
G 0.150
H 13.260
Mass
D 8.28 0.258
pV 0.181 0.0281
Value
Rotational Period 193.900
Period quality 2
Spectral Class None
Spectral Class Score
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
52 Europa -1 Europa -1.0000 Nesvorny 2024ApJS..274...25N HCM-2024
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
3.1459 0.1181 0.1091 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
7.84 0.573 0.573 Masiero 2011ApJ...741...68M NEATM
8.39 0.289 0.289 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.173 0.0339 0.0339 Masiero 2011ApJ...741...68M NEATM
0.199 0.0501 0.0501 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
13.26 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
193.94 2 Sidereal Durech 2023A&A...675A..24D Model