Houssay

02550, 1970 QT, 1970QT, 1970 RV, 1970RV, 1976 UP20, 1976UP20, J70Q00T, J70R00V, J76U20P

All data for this body: [vot]

MPC data
Name (number) Houssay (2550)
a 3.19835
e 0.16542
i / sin(i) 10.4055 / 0.18061
q 2.66929
Q 3.72740
ω 242.4838
Node 158.3306
m 176.1365
n 0.1723
Epoch 2460800.5
nobs 5320
nopp 33
Years observed 1970-2025
rms 0.65
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.199
ep 0.140
sin(ip) 0.174
G 0.150
H 11.560
Mass
D 24.12 0.081
pV 0.106 0.0089
Value
Rotational Period 9.789
Period quality 2
Spectral Class L
Spectral Class Score 3.192
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1990 0.1398 0.1739 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
18.48 1.480 1.480 Usui 2011PASJ...63.1117U NEATM
18.90 3.780 3.780 Ali-Lagoa 2018A&A...612A..85A NEATM
21.50 0.290 0.290 Masiero 2012ApJ...759L...8M NEATM
22.38 0.230 0.230 Masiero 2014ApJ...791..121M NEATM
24.67 0.091 0.091 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.097 0.0122 0.0122 Masiero 2011ApJ...741...68M NEATM
0.105 0.0150 0.0150 Masiero 2012ApJ...759L...8M NEATM
0.131 0.0520 0.0520 Ali-Lagoa 2018A&A...612A..85A NEATM
0.160 0.0300 0.0300 Masiero 2014ApJ...791..121M 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
11.56 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
4.74536 2 Sidereal Durech 2023A&A...675A..24D Model
9.78916 2 Sidereal Durech 2018A&A...617A..57D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
L 0.532 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT