1999 HR4

1999HR4, 1999 JD137, 1999JD137, 1999 JP124, 1999JP124, 2000 SD116, 2000SD116, 59478, J99H04R, J99JC4P, J99JD7D, K00SB6D

All data for this body: [vot]

MPC data
Name (number) 1999 HR4 (59478)
a 2.66648
e 0.22726
i / sin(i) 4.4090 / 0.07688
q 2.06048
Q 3.27247
ω 281.5727
Node 50.0059
m 263.7036
n 0.2264
Epoch 2460800.5
nobs 1679
nopp 21
Years observed 1999-2025
rms 0.79
Best values
[raw, vot]

Value Standard error
Parent Leonidas (2782)
 
ap 2.667
ep 0.192
sin(ip) 0.067
G 0.150
H 14.960
Mass
D 6.24 0.148
pV 0.065 0.0021
Value
Rotational Period
Period quality None
Spectral Class X
Spectral Class Score 5.412
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
2782 Leonidas 0 Leonidas Novakovic 2019EPSC...13.1671N HCM
2782 Leonidas 528 Leonidas Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
144 Vibilia 529 Vibilia Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6668 0.1920 0.0671 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.24 1.590 1.590 Masiero 2020PSJ.....1....5M NEATM
6.25 0.149 0.149 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.065 0.0021 0.0021 Masiero 2011ApJ...741...68M NEATM
0.077 0.0700 0.0700 Masiero 2020PSJ.....1....5M 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
14.96 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
X 0.902 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT