1999 JB21

1999JB21, 38105, J99J21B

All data for this body: [vot]

MPC data
Name (number) 1999 JB21 (38105)
a 2.28025
e 0.13988
i / sin(i) 4.9779 / 0.08677
q 1.96128
Q 2.59921
ω 28.9315
Node 223.1410
m 173.8978
n 0.2862
Epoch 2460800.5
nobs 1940
nopp 19
Years observed 1996-2025
rms 0.74
Best values
[raw, vot]

Value Standard error
Parent Flora (8)
 
ap 2.280
ep 0.146
sin(ip) 0.095
G 0.150
H 15.640
Mass
D 2.02 0.350
pV 0.299 0.0703
Value
Rotational Period
Period quality None
Spectral Class None
Spectral Class Score
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
8 Flora 402 Flora 0.3500 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
298 Baptistina 403 Baptistina 0.5600 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2795 0.1460 0.0951 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.02 0.350 0.350 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.299 0.0703 0.0703 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
15.64 MPC-2023-12-04 MPC-2023-12-04 Phot