1999 DA4

1999DA4, G4781, J99D04A

All data for this body: [vot]

MPC data
Name (number) 1999 DA4 (164781)
a 3.00799
e 0.22597
i / sin(i) 1.5733 / 0.02746
q 2.32827
Q 3.68771
ω 19.2168
Node 123.7704
m 22.2326
n 0.1889
Epoch 2460800.5
nobs 521
nopp 16
Years observed 1992-2025
rms 0.86
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.000
ep 0.264
sin(ip) 0.013
G 0.150
H 16.120
Mass
D 2.83 0.511
pV 0.088 0.0254
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 5.047
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.0001 0.2641 0.0127 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.83 0.511 0.511 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.088 0.0254 0.0254 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
16.12 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
B C 0.1159 0.0340 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C 0.767 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
C C 0.0256 0.0340 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C C 0.0485 0.0340 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
D C 0.0511 0.0340 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
V C 0.0666 0.0340 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT