1999 HQ

1999HQ, 1981 SZ1, 1981SZ1, 1981 TY, 1981TY, 35759, J81S01Z, J81T00Y, J99H00Q

All data for this body: [vot]

MPC data
Name (number) 1999 HQ (35759)
a 2.41550
e 0.19438
i / sin(i) 2.4975 / 0.04358
q 1.94598
Q 2.88502
ω 116.9375
Node 221.6034
m 234.3875
n 0.2625
Epoch 2460800.5
nobs 2001
nopp 22
Years observed 1981-2025
rms 0.76
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.420
ep 0.157
sin(ip) 0.059
G 0.150
H 14.910
Mass
D 6.43 0.269
pV 0.064 0.0083
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 5.748
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4203 0.1572 0.0585 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.92 1.430 1.430 Masiero 2021PSJ.....2..162M NEATM
6.17 2.060 2.060 Nugent 2016AJ....152...63N NEATM
6.46 0.279 0.279 Masiero 2011ApJ...741...68M NEATM
6.52 1.870 1.870 Masiero 2020PSJ.....1....5M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.050 0.0300 0.0300 Nugent 2016AJ....152...63N NEATM
0.050 0.0370 0.0370 Masiero 2020PSJ.....1....5M NEATM
0.061 0.0220 0.0350 Masiero 2021PSJ.....2..162M NEATM
0.067 0.0094 0.0094 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
14.91 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 0.958 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
Cgx Cgx None None Movis NIR Popescu 2018A&A...617A..12P PHOT