Ukko

02020, 1936 FR, 1936FR, 1952 HA2, 1952HA2, 1973 FP1, 1973FP1, J36F00R, J52H02A, J73F01P

All data for this body: [vot]

MPC data
Name (number) Ukko (2020)
a 3.02329
e 0.06246
i / sin(i) 11.1182 / 0.19284
q 2.83445
Q 3.21212
ω 328.6809
Node 148.6006
m 41.5196
n 0.1875
Epoch 2460800.5
nobs 6700
nopp 32
Years observed 1936-2025
rms 0.59
Best values
[raw, vot]

Value Standard error
Parent Eos (221)
 
ap 3.023
ep 0.090
sin(ip) 0.181
G 0.150
H 11.430
Mass
D 18.65 0.069
pV 0.132 0.0102
Value
Rotational Period 25.470
Period quality 2+
Spectral Class L
Spectral Class Score 5.887
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
221 Eos 0 Eos Novakovic 2019EPSC...13.1671N HCM
221 Eos 606 Eos -0.0700 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.0235 0.0899 0.1809 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
17.86 0.329 0.329 Masiero 2011ApJ...741...68M NEATM
18.13 0.190 0.190 Masiero 2014ApJ...791..121M NEATM
18.74 0.080 0.080 Masiero 2014ApJ...791..121M NEATM
18.98 0.244 0.244 Masiero 2011ApJ...741...68M NEATM
20.12 1.440 1.440 Usui 2011PASJ...63.1117U NEATM
20.78 4.160 4.160 Ali-Lagoa 2018A&A...612A..85A NEATM
21.52 1.800 1.800 Tedesco 2002AJ....123.1056T STM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.105 0.0200 0.0200 Tedesco 2002AJ....123.1056T STM
0.132 0.0530 0.0530 Ali-Lagoa 2018A&A...612A..85A NEATM
0.136 0.0226 0.0226 Masiero 2011ApJ...741...68M NEATM
0.140 0.0200 0.0200 Masiero 2014ApJ...791..121M NEATM
0.150 0.0300 0.0300 Masiero 2014ApJ...791..121M NEATM
0.153 0.0293 0.0293 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
11.43 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
25.4404 2 Synodic Pal 2020ApJS..247...26P Lightcurve
25.478 2+ Synodic Pilcher 2015MPBu...42..238P Lightcurve
25.48055 2 Sidereal Martikainen 2021A&A...649A..98M Model
25.4807 2 Sidereal Durech 2018A&A...617A..57D Model
25.481 2 Sidereal Durech 2023A&A...675A..24D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
L L 0.4271 0.2300 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
L L 0.5541 0.2300 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X 0.461 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT