Dwarf planets

The below table lists the dwarf planets that are either recognized by the IAU (International Astronomical Union), or marked with 'near certainty' in the list of dwarf planet candidates as published by Michael E. Brown.
For detailed information about one of the (candidate) dwarf planets, click on its name.

Dwarf planet Today Opposition
designation magn radius delta elong phase date magn radius delta elong phase
Ceres8.72.56 AU3.23 AU40.4°14.7°20 Mar 20236.92.57 AU1.60 AU163.1°6.5°
Pluto15.134.62 AU34.37 AU103.4°1.6°21 Jul 202314.934.81 AU33.80 AU177.2°0.1°
Makemake17.152.65 AU53.53 AU27.5°0.5°29 Mar 202317.152.66 AU51.77 AU151.8°0.5°
Haumea17.450.12 AU50.97 AU31.8°0.6°20 Apr 202317.350.08 AU49.19 AU151.3°0.6°
Eris18.695.80 AU94.84 AU163.7°0.2°17 Oct 202218.695.80 AU94.82 AU168.7°0.1°
Quaoar18.942.74 AU42.85 AU82.7°1.3°29 Jun 202318.742.71 AU41.71 AU171.8°0.2°
Orcus19.348.05 AU48.87 AU33.9°0.7°4 Mar 202319.248.04 AU47.11 AU159.6°0.4°
2002 MS420.546.33 AU46.29 AU91.7°1.2°8 Jul 202320.346.26 AU45.29 AU162.9°0.4°
Sedna20.983.78 AU83.12 AU131.6°0.5°21 Nov 202220.883.75 AU82.78 AU168.0°0.1°
Salacia20.945.12 AU44.21 AU155.0°0.5°30 Sep 202220.945.11 AU44.20 AU155.6°0.5°
Gonggong21.489.01 AU88.22 AU141.7°0.4°27 Aug 202221.388.98 AU87.97 AU178.5°0.0°


The current positions of the recognized dwarf planets are plotted in the below all-sky chart:





    Terminology:
            
    delta:      Distance between dwarf planet and earth in AU
    radius:     Distance between dwarf planet and sun in AU
    magn:       Magnitude (brightness) estimate    
    elong:      Elongation in degrees (angle sun-earth-dwarf planet)    
    AU:         Astronomical Unit (mean distance between earth and sun: 149597870.7 km    
    

Orbital elements provided by the MPC (Minor Planet Center).
Calculations by a modified version of AAPlus, a C# implementation of the AA+ project by PJ Naughter from the algorithms presented in the book "Astronomical Algorithms" by Jean Meeus.
NGC2000 dso catalog and star labels from VizieR as provided by the Strasbourg astronomical Data Center.
Tycho2 catalog from the ESO archive.