Bright asteroids

The table below lists asteroids that are currently bright enough for amateur telescopes. Near-earth objects are not included in this list.
For detailed information about one of the listed asteroids, click on its name/designation.

Asteroid Today Opposition
designation magn radius delta elong phase date magn radius delta elong phase
(4) Vesta8.42.52 AU3.47 AU18.0°7.1°4 Mar 20216.12.34 AU1.36 AU169.3°4.5°
(2) Pallas9.73.39 AU2.64 AU130.0°13.3°12 Jul 20209.63.37 AU2.56 AU136.3°12.0°
(7) Iris9.82.54 AU1.75 AU131.8°17.3°27 Jun 20208.92.64 AU1.62 AU177.3°1.0°
(8) Flora10.01.90 AU1.43 AU100.5°31.7°1 Nov 20208.01.86 AU0.88 AU168.1°6.3°
(15) Eunomia10.32.25 AU2.90 AU42.4°17.7°21 Jan 20218.52.55 AU1.57 AU177.1°1.1°
(19) Fortuna10.32.18 AU1.30 AU141.9°16.6°11 Sep 20209.32.14 AU1.13 AU178.0°0.9°
(20) Massalia10.42.61 AU1.65 AU156.2°9.0°28 Aug 20209.72.58 AU1.57 AU178.9°0.4°
(532) Herculina10.52.81 AU1.98 AU137.7°14.0°2 Jul 20209.52.74 AU1.73 AU176.9°1.2°
(68) Leto10.62.27 AU1.55 AU123.1°22.0°29 Sep 20209.52.28 AU1.29 AU171.4°3.8°
(129) Antigone10.72.43 AU1.49 AU151.8°11.4°15 Jul 202010.12.39 AU1.38 AU171.8°3.5°
(44) Nysa10.72.76 AU1.74 AU176.1°1.4°5 Aug 202010.62.76 AU1.74 AU179.6°0.1°
(11) Parthenope10.82.27 AU1.84 AU102.0°25.8°23 Oct 20209.32.35 AU1.36 AU172.0°3.4°
(9) Metis10.82.19 AU3.19 AU6.4°3.0°4 Apr 20219.52.50 AU1.50 AU172.5°3.0°
(18) Melpomene11.01.97 AU2.65 AU39.3°19.0°1 Feb 20219.42.40 AU1.42 AU174.8°2.1°
(22) Kalliope11.12.84 AU2.00 AU138.6°13.6°10 Sep 202010.62.81 AU1.85 AU159.3°7.3°
(138) Tolosa11.12.05 AU1.06 AU163.1°8.3°21 Aug 202010.82.06 AU1.05 AU173.6°3.1°
(471) Papagena11.12.30 AU1.86 AU102.0°25.6°25 Oct 20209.72.24 AU1.28 AU159.1°9.1°
(29) Amphitrite11.12.41 AU3.30 AU24.1°9.9°21 Feb 20219.22.55 AU1.56 AU176.0°1.5°
(221) Eos11.12.71 AU1.70 AU177.8°0.8°7 Aug 202011.12.71 AU1.70 AU178.0°0.8°
(17) Thetis11.22.36 AU1.47 AU142.4°15.2°9 Sep 202010.62.40 AU1.40 AU173.6°2.7°
(16) Psyche11.32.57 AU2.76 AU68.7°21.6°7 Dec 20209.52.68 AU1.69 AU175.3°1.7°
(56) Melete11.31.98 AU1.13 AU134.2°21.6°28 Jun 202010.62.00 AU1.01 AU163.8°8.1°
(42) Isis11.32.05 AU1.58 AU102.2°28.9°8 Dec 202110.72.56 AU1.58 AU178.1°0.7°
(3) Juno11.43.26 AU3.63 AU60.8°15.8°6 Jun 202110.13.30 AU2.32 AU161.4°5.6°
(432) Pythia11.42.14 AU1.15 AU163.0°8.0°8 Aug 202011.42.14 AU1.15 AU163.0°8.0°
(39) Laetitia11.52.56 AU2.92 AU59.3°19.9°21 Dec 20209.92.70 AU1.74 AU165.0°5.4°
(444) Gyptis11.52.40 AU1.45 AU152.9°11.1°20 Jul 202011.32.42 AU1.43 AU162.9°7.1°
(6) Hebe11.62.87 AU3.19 AU63.2°18.3°16 Jul 20218.52.28 AU1.28 AU168.9°4.9°
(85) Io11.62.25 AU1.60 AU117.5°23.6°12 Jun 202010.82.35 AU1.36 AU162.1°7.6°
(550) Senta11.62.01 AU1.04 AU157.5°11.1°22 Aug 202011.52.02 AU1.03 AU162.8°8.5°
(61) Danae11.62.49 AU1.72 AU129.9°18.2°22 Sep 202010.82.50 AU1.52 AU166.3°5.4°
(194) Prokne11.62.09 AU1.56 AU106.5°27.7°17 Oct 202010.72.23 AU1.28 AU156.2°10.4°
(747) Winchester11.62.17 AU1.56 AU113.0°25.4°13 Oct 202010.42.03 AU1.12 AU147.3°15.4°
(354) Eleonora11.72.74 AU2.83 AU74.4°20.9°22 Jul 202110.73.07 AU2.07 AU170.0°3.3°
(487) Venetia11.72.59 AU1.58 AU169.8°4.0°14 Aug 202011.72.58 AU1.57 AU172.2°3.1°
(106) Dione11.72.94 AU1.94 AU169.3°3.7°15 Aug 202011.62.93 AU1.92 AU173.0°2.4°
(40) Harmonia11.82.32 AU2.26 AU80.4°25.5°1 Oct 20219.42.16 AU1.16 AU172.1°3.6°
(335) Roberta11.82.05 AU1.13 AU146.8°15.7°10 Jul 202011.02.05 AU1.03 AU173.5°3.2°
(737) Arequipa11.81.98 AU1.14 AU133.7°21.7°18 Sep 202010.82.03 AU1.03 AU176.2°1.9°
(5) Astraea11.82.21 AU2.93 AU37.3°16.1°19 Jun 202110.72.81 AU1.80 AU173.2°2.4°
(349) Dembowska11.83.08 AU2.90 AU90.9°19.2°11 Aug 20219.92.77 AU1.77 AU167.6°4.5°
(10) Hygiea11.83.37 AU4.23 AU27.5°8.0°28 Jan 20219.93.21 AU2.22 AU177.6°0.7°
(165) Loreley11.92.90 AU1.90 AU168.7°3.9°16 Aug 202011.82.90 AU1.89 AU173.5°2.3°
(751) Faina11.92.34 AU1.37 AU157.1°9.7°7 Aug 202011.92.34 AU1.37 AU157.3°9.6°
(14) Irene11.92.61 AU3.29 AU40.6°14.6°24 Jan 20219.22.32 AU1.34 AU170.1°4.2°
(259) Aletheia11.92.87 AU1.88 AU164.2°5.5°29 Jul 202011.82.86 AU1.85 AU169.0°3.9°


For each of the asteroids listed, the current position is plotted in the below all-sky chart:





    Terminology:
            
    delta:      Distance between asteroid and earth in AU
    radius:     Distance between asteroid and sun in AU
    magn:       Magnitude (brightness) estimate    
    elong:      Elongation in degrees (angle sun-earth-asteroid)    
    AU:         Astronomical Unit (mean distance between earth and sun: 149597870.7 km    
    Perihelion: On this date the comet (or other type of body) is closest to the sun
    

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.