Polakis

04078, 1949 QH2, 1949QH2, 1976 UY3, 1976UY3, 1983 AC, 1983AC, 1987 YX, 1987YX, J49Q02H, J76U03Y, J83A00C, J87Y00X

All data for this body: [vot]

MPC data
Name (number) Polakis (4078)
a 3.01640
e 0.10930
i / sin(i) 11.6270 / 0.20154
q 2.68670
Q 3.34610
ω 229.3125
Node 82.9980
m 172.4685
n 0.1881
Epoch 2460800.5
nobs 5205
nopp 30
Years observed 1949-2025
rms 0.63
Best values
[raw, vot]

Value Standard error
Parent Eos (221)
 
ap 3.017
ep 0.095
sin(ip) 0.181
G 0.150
H 11.270
Mass
D 19.62 0.123
pV 0.141 0.0088
Value
Rotational Period 4.830
Period quality 3
Spectral Class S
Spectral Class Score 13.481
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
221 Eos 606 Eos -0.3300 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.0170 0.0947 0.1813 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
18.29 3.660 3.660 Ali-Lagoa 2018A&A...612A..85A NEATM
19.56 0.145 0.145 Masiero 2011ApJ...741...68M NEATM
19.65 0.250 0.250 Masiero 2014ApJ...791..121M NEATM
20.83 0.670 0.670 Usui 2011PASJ...63.1117U NEATM
21.60 4.320 4.320 Ali-Lagoa 2018A&A...612A..85A NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.140 0.0100 0.0100 Masiero 2014ApJ...791..121M NEATM
0.140 0.0198 0.0198 Masiero 2011ApJ...741...68M NEATM
0.144 0.0580 0.0580 Ali-Lagoa 2018A&A...612A..85A NEATM
0.201 0.0800 0.0800 Ali-Lagoa 2018A&A...612A..85A 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
11.27 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
4.8274 3 Synodic Polakis 2019MPBu...46..132P Lightcurve
4.827558 2 Sidereal Durech 2020A&A...643A..59D Model
4.831 3 Synodic Torno 2008MPBu...35...54T Lightcurve
4.87 3- Synodic Behrend LCDB Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
Cgx Cgx None None Movis NIR Popescu 2018A&A...617A..12P PHOT
LS 0.78 Bus VIS Carvano 2010A&A...510A..43C PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S S 0.5210 0.5220 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.6511 0.5220 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.7414 0.5220 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X S 0.4048 0.5220 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT