Davidallen

04499, 1931 WA, 1931WA, 1987 SR26, 1987SR26, 1989 AO3, 1989AO3, J31W00A, J87S26R, J89A03O

All data for this body: [vot]

MPC data
Name (number) Davidallen (4499)
a 3.18483
e 0.15211
i / sin(i) 6.5626 / 0.11429
q 2.70040
Q 3.66926
ω 90.5696
Node 317.5591
m 209.3568
n 0.1734
Epoch 2460800.5
nobs 3679
nopp 31
Years observed 1931-2025
rms 0.65
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.170
ep 0.139
sin(ip) 0.136
G 0.150
H 12.660
Mass
D 15.94 0.170
pV 0.076 0.0170
Value
Rotational Period 87.153
Period quality 2
Spectral Class X
Spectral Class Score 3.918
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1704 0.1392 0.1355 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
15.94 0.170 0.170 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.076 0.0170 0.0170 Masiero 2012ApJ...759L...8M 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
12.66 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
87.1539 2 Synodic Pal 2020ApJS..247...26P Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
D D 0.5391 0.5391 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
Ds Ad None None Movis NIR Popescu 2018A&A...617A..12P PHOT
X 0.653 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
XD 0.14 Bus VIS Carvano 2010A&A...510A..43C PHOT