1998 SQ21

1998SQ21, I7775, J98S21Q

All data for this body: [vot]

MPC data
Name (number) 1998 SQ21 (187775)
a 2.33357
e 0.18472
i / sin(i) 4.3418 / 0.07571
q 1.90252
Q 2.76463
ω 319.3319
Node 0.6833
m 207.4188
n 0.2765
Epoch 2460800.5
nobs 680
nopp 16
Years observed 1998-2025
rms 0.86
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.334
ep 0.147
sin(ip) 0.075
G 0.150
H 16.730
Mass
D
pV
Value
Rotational Period
Period quality None
Spectral Class V
Spectral Class Score 19.021
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3345 0.1473 0.0750 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
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
16.73 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
A V 0.0676 0.2430 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S 0.941 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
V DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
V 0.07 Bus VIS Carvano 2010A&A...510A..43C PHOT
V V 0.0353 0.2430 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
V V 0.0433 0.2430 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
V V 0.1244 0.2430 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
V V 0.2065 0.2430 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
V V 0.4013 0.2430 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
V V 0.4509 0.2430 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
V V 0.4801 0.2430 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
V V 0.4874 0.2430 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
V V 0.5843 0.2430 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT