1991 VD4

1991VD4, 43815, J91V04D

All data for this body: [vot]

MPC data
Name (number) 1991 VD4 (43815)
a 3.16130
e 0.26330
i / sin(i) 24.1884 / 0.40974
q 2.32894
Q 3.99365
ω 160.2946
Node 256.6539
m 319.6431
n 0.1754
Epoch 2460800.5
nobs 3589
nopp 23
Years observed 1991-2025
rms 0.63
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.171
ep 0.290
sin(ip) 0.395
G 0.150
H 12.000
Mass
D 13.70 0.187
pV 0.136 0.0139
Value
Rotational Period 4.442
Period quality 3
Spectral Class K
Spectral Class Score 3.972
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1713 0.2904 0.3945 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
13.70 0.187 0.187 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.136 0.0139 0.0139 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
12.00 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
4.44221 2 Sidereal Durech 2019A&A...631A...2D Model
4.44222 2 Sidereal Durech 2023A&A...675A..24D Model
4.4423 3 Synodic Clark 2020MPBu...47..163C Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
K 0.662 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT