1999 HH4

1999HH4, 31653, J99H04H

All data for this body: [vot]

MPC data
Name (number) 1999 HH4 (31653)
a 3.14250
e 0.14505
i / sin(i) 1.0413 / 0.01817
q 2.68667
Q 3.59832
ω 313.2036
Node 173.4818
m 319.5283
n 0.1769
Epoch 2460800.5
nobs 1496
nopp 22
Years observed 1991-2025
rms 0.81
Best values
[raw, vot]

Value Standard error
Parent Themis (24)
 
ap 3.147
ep 0.155
sin(ip) 0.025
G 0.150
H 14.490
Mass
D 5.86 0.097
pV 0.086 0.0070
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 1.000
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
24 Themis 0 Themis Novakovic 2019EPSC...13.1671N HCM
656 Beagle 0 Beagle Novakovic 2019EPSC...13.1671N HCM
24 Themis 602 Themis 0.0700 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1470 0.1551 0.0253 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.73 0.109 0.109 Masiero 2011ApJ...741...68M NEATM
6.34 0.212 0.212 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.084 0.0075 0.0075 Masiero 2011ApJ...741...68M NEATM
0.102 0.0192 0.0192 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
14.49 MPC-2023-12-04 MPC-2023-12-04 Phot
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C Kl None None Movis NIR Popescu 2018A&A...617A..12P PHOT