1981 QW2

1981QW2, 14813, 1991 RS26, 1991RS26, J81Q02W, J91R26S

All data for this body: [vot]

MPC data
Name (number) 1981 QW2 (14813)
a 2.21208
e 0.17672
i / sin(i) 3.7227 / 0.06493
q 1.82117
Q 2.60299
ω 272.2784
Node 40.5078
m 125.4965
n 0.2996
Epoch 2460800.5
nobs 2683
nopp 20
Years observed 1981-2025
rms 0.71
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.211
ep 0.127
sin(ip) 0.057
G 0.150
H 15.090
Mass
D 2.35 0.049
pV 0.541 0.0861
Value
Rotational Period 4.970
Period quality 2
Spectral Class S
Spectral Class Score 3.353
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2110 0.1271 0.0574 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.34 0.049 0.049 Masiero 2011ApJ...741...68M NEATM
2.78 0.470 0.470 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.436 0.1350 0.1350 Masiero 2011ApJ...741...68M NEATM
0.613 0.1118 0.1118 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
15.09 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
4.97565 2 Sidereal Durech 2023A&A...675A..24D Model
4.977 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 S 0.5589 0.5589 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
V 0.256 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT