Chicago

00334, 1892 QB, 1892QB, 1903 HA, 1903HA, I92Q00B, J03H00A

All data for this body: [vot]

MPC data
Name (number) Chicago (334)
a 3.93638
e 0.02432
i / sin(i) 4.6535 / 0.08113
q 3.84063
Q 4.03212
ω 179.8373
Node 129.4605
m 129.4430
n 0.1262
Epoch 2460800.5
nobs 5495
nopp 88
Years observed 1892-2025
rms 0.72
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.883
ep 0.068
sin(ip) 0.065
G 0.150
H 7.620
Mass 3.826e+18 1.547e+18
D 170.52 1.857
pV 0.053 0.0037
Value
Rotational Period 7.360
Period quality 3
Spectral Class Xc
Spectral Class Score 36.000
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.8832 0.0679 0.0652 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Mass data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
1.0600e+18 1.6200e+19 1.6200e+19 Zielenbach 2011AJ....142..120Z Deflec
1.3000e+19 3.2200e+19 3.2200e+19 Zielenbach 2011AJ....142..120Z Deflec
2.1900e+18 Folkner 2014IPNPR.196C...1F Ephem
3.8448e+18 1.5627e+18 1.5627e+18 Fienga INPOP19a Ephem
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
151.45 12.849 12.849 Ryan&Woodward 2010AJ....140..933R IRAS-STM
158.55 8.900 8.900 Tedesco 2002AJ....123.1056T STM
167.21 2.110 2.110 Usui 2011PASJ...63.1117U NEATM
174.10 12.788 12.788 Masiero 2011ApJ...741...68M NEATM
179.17 17.920 17.920 Ali-Lagoa 2018A&A...612A..85A NEATM
180.98 18.100 18.100 Ali-Lagoa 2018A&A...612A..85A NEATM
182.25 19.883 19.883 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
198.77 5.600 5.600 Grav 2012ApJ...744..197G NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.041 0.0070 0.0070 Grav 2012ApJ...744..197G NEATM
0.051 0.0100 0.0100 Ali-Lagoa 2018A&A...612A..85A NEATM
0.051 0.0164 0.0164 Masiero 2011ApJ...741...68M NEATM
0.051 0.0116 0.0116 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.052 0.0100 0.0100 Ali-Lagoa 2018A&A...612A..85A NEATM
0.062 0.0080 0.0080 Tedesco 2002AJ....123.1056T STM
0.072 0.0118 0.0118 Ryan&Woodward 2010AJ....140..933R IRAS-STM
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
7.62 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
7.34 2 Synodic Weidenschilling 1990Icar...86..402W Lightcurve
7.344 2+ Synodic Slyusarev LCDB Lightcurve
7.348 2 Synodic Behrend LCDB Lightcurve
7.35 2+ Synodic Jutzeler 2007JSARA...1....2J Lightcurve
7.359 2+ Synodic Strabla 2011MPBu...38..169S Lightcurve
7.3595 3- Synodic Behrend LCDB Lightcurve
7.3599 2 Sidereal Durech 2023A&A...675A..24D Model
7.36 2 Synodic Behrend LCDB Lightcurve
7.36 3 Synodic Behrend LCDB Lightcurve
7.36014 2 Sidereal Durech 2019A&A...631A...2D Model
7.361 3 Synodic Behrend LCDB Lightcurve
9.19 2 Synodic Zappala 1989Icar...82..354Z Lightcurve
9.1979 2 Sidereal Michalowski 1993Icar..106..563M Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C Tholen VIS Dahlgren 1997A&A...323..606D SPEC
C Tholen VIS Fornasier 2014Icar..233..163F SPEC
C 0.890000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
P 0.990000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
X Bus-DeMeo NIR De Pra 2018Icar..311...35D SPEC
X DeMeo-Carry VIS Choi 2023PSJ.....4...49C PHOT
X 0.998 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
Xc Bus-DeMeo VIS De Pra 2018Icar..311...35D SPEC
Xc Bus-DeMeo VISNIR Hasegawa 2024AJ....167..224H SPEC