Grueber

1991 AU, 1991AU, 1998 YL8, 1998YL8, 26355, J91A00U, J98Y08L

All data for this body: [vot]

MPC data
Name (number) Grueber (26355)
a 2.51828
e 0.25503
i / sin(i) 12.1501 / 0.21047
q 1.87604
Q 3.16052
ω 277.9360
Node 94.5063
m 276.3498
n 0.2466
Epoch 2460800.5
nobs 3885
nopp 24
Years observed 1991-2025
rms 0.61
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.517
ep 0.178
sin(ip) 0.204
G 0.150
H 12.860
Mass
D 5.57 0.370
pV 0.519 0.0950
Value
Rotational Period 4.530
Period quality 3
Spectral Class L
Spectral Class Score 4.915
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5169 0.1776 0.2037 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.57 0.370 0.370 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.519 0.0950 0.0950 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
12.86 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
4.539 3 Synodic Fauerbach 2019MPBu...46..236F Lightcurve
4.54 3 Synodic Benishek LCDB Lightcurve
4.540231 2 Sidereal Durech 2019A&A...631A...2D Model
4.54025 2 Sidereal Durech 2023A&A...675A..24D Model
4.541 3- Synodic Behrend LCDB Lightcurve
5.015 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
L 0.86 Bus VIS Carvano 2010A&A...510A..43C PHOT
L L 0.5325 0.5325 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT