4221 T-3

4221T-3, 18279, 1998 HX125, 1998HX125, J98HC5X, T3S4221

All data for this body: [vot]

MPC data
Name (number) 4221 T-3 (18279)
a 2.74904
e 0.13969
i / sin(i) 9.3094 / 0.16177
q 2.36503
Q 3.13305
ω 350.7902
Node 176.5509
m 22.1425
n 0.2162
Epoch 2460800.5
nobs 3408
nopp 25
Years observed 1977-2025
rms 0.72
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.748
ep 0.188
sin(ip) 0.157
G 0.150
H 13.980
Mass
D
pV
Value
Rotational Period 16.650
Period quality 2
Spectral Class S
Spectral Class Score 15.701
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7481 0.1879 0.1566 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
13.98 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
16.6469 2 Sidereal Durech 2023A&A...675A..24D Model
16.658 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S 0.86 Bus VIS Carvano 2010A&A...510A..43C PHOT
K 0.555 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S S 0.9970 0.9990 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.9999 0.9990 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT