1998 QA21

1998QA21, 74098, J98Q21A

All data for this body: [vot]

MPC data
Name (number) 1998 QA21 (74098)
a 2.56567
e 0.11721
i / sin(i) 15.1791 / 0.26184
q 2.26494
Q 2.86639
ω 135.4613
Node 150.5290
m 213.3473
n 0.2398
Epoch 2460800.5
nobs 2236
nopp 20
Years observed 1998-2025
rms 0.77
Best values
[raw, vot]

Value Standard error
Parent Maria (170)
 
ap 2.566
ep 0.095
sin(ip) 0.255
G 0.150
H 14.720
Mass
D 3.02 0.576
pV 0.405 0.0851
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 5.910
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
170 Maria 0 Maria Novakovic 2019EPSC...13.1671N HCM
170 Maria 506 Maria 0.1000 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5663 0.0951 0.2554 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.02 0.576 0.576 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.405 0.0851 0.0851 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
14.72 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
D 0.07 Bus VIS Carvano 2010A&A...510A..43C PHOT
S 0.985 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT