1990 UL1

1990UL1, 08366, 1989 KP, 1989KP, J89K00P, J90U01L

All data for this body: [vot]

MPC data
Name (number) 1990 UL1 (8366)
a 2.25905
e 0.17614
i / sin(i) 4.5133 / 0.07869
q 1.86115
Q 2.65695
ω 286.1243
Node 106.3160
m 65.6916
n 0.2903
Epoch 2460800.5
nobs 4165
nopp 25
Years observed 1979-2025
rms 0.63
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.259
ep 0.152
sin(ip) 0.069
G 0.150
H 14.170
Mass
D 3.85 0.180
pV 0.329 0.0440
Value
Rotational Period 10.800
Period quality 2
Spectral Class S
Spectral Class Score 23.801
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2591 0.1525 0.0687 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.85 0.180 0.180 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.329 0.0440 0.0440 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
14.17 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
10.82 2 Synodic Erasmus 2019ApJS..242...15E Lightcurve
54.021 2 Sidereal Durech 2020A&A...643A..59D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S 0.977 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S 1.000000 Bus-DeMeo VIS Erasmus 2019ApJS..242...15E PHOT
S S 0.9921 0.9950 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.9978 0.9950 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT