Zephyr

12923, 1999 GK4, 1999GK4, J99G04K

All data for this body: [vot]

MPC data
Name (number) Zephyr (12923)
a 1.96290
e 0.49219
i / sin(i) 5.3054 / 0.09247
q 0.99678
Q 2.92902
ω 147.1723
Node 168.1201
m 123.1990
n 0.3584
Epoch 2460800.5
nobs 2816
nopp 21
Years observed 1988-2025
rms 0.72
Best values
[raw, vot]

Value Standard error
Parent
 
ap
ep
sin(ip)
G 0.150
H 15.800
Mass
D 2.06 0.013
pV 0.199 0.0340
Value
Rotational Period 3.890
Period quality 3
Spectral Class S
Spectral Class Score 37.856
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.06 0.013 0.013 Mainzer 2011ApJ...743..156M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.199 0.0340 0.0340 Mainzer 2011ApJ...743..156M 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
15.80 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
3.891 3 Synodic Pravec LCDB Lightcurve
3.893 3 Synodic Warner 2021MPBu...48..337W Lightcurve
3.894 2 Synodic Schmalz 2022MPBu...49..291S Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
Q Bus-DeMeo VIS Morate 2023MNRAS.519.1677M SPEC
Q S 0.800000 0.190000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
S-complex Bus-DeMeo NIR Binzel 2019Icar..324...41B SPEC
S Bus-DeMeo VISNIR Thomas 2014Icar..228..217T SPEC
S Bus VIS Lin 2018P&SS..152..116L PHOT
S Bus VISNIR Binzel 2004Icar..170..259B SPEC
S 0.976 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S DeMeo-Carry VIS Choi 2023PSJ.....4...49C PHOT