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) Vesta6.72.18 AU1.51 AU118.2°24.2°19 Jun 20185.32.16 AU1.14 AU176.2°1.8°
(2) Pallas8.82.14 AU3.10 AU15.4°7.2°10 Apr 20197.92.54 AU1.61 AU152.1°10.7°
(3) Juno9.12.07 AU1.71 AU95.5°29.1°17 Nov 20187.41.98 AU1.04 AU156.9°11.3°
(6) Hebe10.01.98 AU2.14 AU67.1°28.1°28 Dec 20188.42.22 AU1.26 AU162.0°7.8°
(115) Thyra10.22.16 AU1.18 AU159.3°9.6°2 Sep 20189.92.13 AU1.13 AU168.7°5.4°
(7) Iris10.22.35 AU3.36 AU3.5°1.5°5 Apr 20199.42.82 AU1.83 AU172.3°2.7°
(230) Athamantis10.22.28 AU1.30 AU160.4°8.5°26 Aug 201810.22.28 AU1.29 AU163.2°7.4°
(88) Thisbe10.42.32 AU1.40 AU147.6°13.5°20 Jul 20189.72.33 AU1.32 AU176.7°1.5°
(27) Euterpe10.42.44 AU1.48 AU157.2°9.2°6 Sep 20189.82.41 AU1.40 AU177.5°1.1°
(14) Irene10.52.76 AU1.84 AU149.8°10.6°24 Jul 201810.02.72 AU1.71 AU171.7°3.1°
(29) Amphitrite10.62.69 AU2.14 AU112.5°20.3°14 Oct 20198.72.41 AU1.41 AU175.8°1.7°
(30) Urania10.62.15 AU1.25 AU143.1°16.4°19 Sep 20189.62.12 AU1.12 AU177.0°1.4°
(10) Hygiea10.73.28 AU2.46 AU137.9°11.9°24 Sep 201810.13.32 AU2.32 AU174.6°1.6°
(148) Gallia10.82.51 AU1.50 AU172.8°2.9°23 Aug 201810.72.50 AU1.49 AU176.1°1.6°
(37) Fides10.82.61 AU1.62 AU165.3°5.6°30 Aug 201810.52.59 AU1.58 AU177.4°1.0°
(70) Panopaea10.82.16 AU1.19 AU157.1°10.5°10 Aug 201810.82.15 AU1.18 AU158.4°10.0°
(196) Philomela10.93.08 AU2.09 AU167.7°4.0°11 Aug 201810.93.08 AU2.08 AU170.1°3.2°
(15) Eunomia11.03.02 AU3.02 AU80.5°19.3°13 Aug 20198.22.40 AU1.39 AU170.6°4.0°
(9) Metis11.02.65 AU2.08 AU113.2°20.6°26 Oct 20198.62.16 AU1.17 AU173.8°2.9°
(173) Ino11.02.23 AU1.33 AU144.0°15.5°18 Sep 201810.32.20 AU1.21 AU168.2°5.4°
(409) Aspasia11.12.55 AU1.57 AU161.5°7.2°15 Aug 201811.12.55 AU1.57 AU161.8°7.1°
(47) Aglaja11.12.51 AU1.51 AU170.1°4.0°11 Aug 201811.02.51 AU1.50 AU174.1°2.4°
(140) Siwa11.12.15 AU1.20 AU152.5°12.6°24 Jul 201810.42.15 AU1.13 AU178.3°0.8°
(511) Davida11.23.07 AU2.26 AU135.6°13.3°22 Sep 201810.73.00 AU2.05 AU157.5°7.4°
(20) Massalia11.22.23 AU3.18 AU16.3°7.3°20 May 20199.72.63 AU1.62 AU179.1°0.3°
(44) Nysa11.22.09 AU3.09 AU4.7°2.3°24 Apr 20199.92.43 AU1.42 AU173.7°2.6°
(498) Tokio11.22.08 AU1.09 AU165.1°7.2°11 Aug 201811.22.09 AU1.08 AU167.9°5.8°
(258) Tyche11.32.18 AU1.22 AU155.0°11.3°12 Aug 201811.32.19 AU1.23 AU155.6°11.0°
(532) Herculina11.32.68 AU3.42 AU36.9°13.1°6 Feb 20198.92.40 AU1.43 AU166.2°5.6°
(41) Daphne11.32.84 AU1.87 AU160.0°7.0°2 Sep 201811.12.88 AU1.88 AU171.9°2.8°
(387) Aquitania11.42.40 AU1.63 AU128.7°19.2°29 Sep 201811.02.50 AU1.56 AU154.8°9.8°
(63) Ausonia11.42.34 AU1.63 AU122.9°21.3°7 Oct 201810.52.41 AU1.42 AU174.1°2.4°
(198) Ampella11.52.08 AU1.26 AU132.6°21.0°7 Jul 201810.62.18 AU1.17 AU175.0°2.3°
(8) Flora11.52.40 AU3.35 AU17.5°7.3°12 May 20199.72.53 AU1.53 AU171.5°3.4°
(55) Pandora11.52.57 AU1.63 AU151.6°10.8°26 Jul 201811.22.60 AU1.59 AU169.1°4.2°
(43) Ariadne11.52.08 AU1.41 AU117.3°25.6°13 Oct 201810.32.19 AU1.20 AU174.2°2.6°
(26) Proserpina11.52.51 AU1.69 AU134.0°16.9°7 Jul 201810.52.47 AU1.46 AU174.8°2.2°
(5) Astraea11.62.97 AU2.10 AU142.8°11.9°19 Sep 201810.82.94 AU1.94 AU175.4°1.6°
(192) Nausikaa11.62.32 AU1.80 AU107.7°24.6°9 Jan 202010.02.31 AU1.33 AU170.3°4.1°
(346) Hermentaria11.62.52 AU1.91 AU115.5°21.2°16 Oct 201810.52.51 AU1.53 AU166.5°5.3°
(52) Europa11.63.43 AU2.53 AU147.7°9.1°20 Jul 201811.03.43 AU2.42 AU177.9°0.6°
(349) Dembowska11.62.97 AU3.92 AU17.2°5.8°27 Feb 201910.33.12 AU2.14 AU170.2°3.1°
(324) Bamberga11.62.07 AU2.62 AU47.2°21.1°21 Jan 201910.42.65 AU1.67 AU171.8°3.0°
(40) Harmonia11.62.18 AU2.19 AU76.0°26.8°8 Dec 20189.42.23 AU1.25 AU177.5°1.1°
(144) Vibilia11.62.36 AU1.55 AU133.1°18.2°7 Jul 201810.92.47 AU1.45 AU176.0°1.6°
(12) Victoria11.72.21 AU2.08 AU83.8°27.1°22 Nov 201810.12.45 AU1.46 AU178.9°0.5°
(39) Laetitia11.72.91 AU2.95 AU77.8°19.9°17 Aug 20199.12.52 AU1.51 AU176.0°1.6°
(28) Bellona11.73.12 AU2.15 AU159.9°6.4°4 Sep 201811.33.11 AU2.10 AU175.9°1.3°
(354) Eleonora11.72.77 AU2.94 AU70.4°20.1°14 Dec 201810.22.64 AU1.71 AU155.1°9.0°
(16) Psyche11.83.16 AU3.13 AU82.3°18.5°7 Aug 20199.32.70 AU1.69 AU178.3°0.6°
(216) Kleopatra11.92.15 AU2.52 AU57.1°23.3°10 Jan 201910.62.45 AU1.50 AU159.2°8.2°
(23) Thalia11.92.69 AU2.25 AU104.4°21.4°28 Oct 201810.22.51 AU1.52 AU171.0°3.5°
(704) Interamnia11.92.84 AU3.47 AU44.4°14.5°15 Jan 201910.33.06 AU2.08 AU173.7°2.0°


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 MPC (Minor Planet Center)
UCAC4 star catalog and NGC2000 dso catalog via VizieR as provided by the Strasbourg astronomical Data 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.