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) Vesta5.92.15 AU1.21 AU150.7°13.3°19 Jun 20185.32.16 AU1.14 AU176.2°1.8°
(2) Pallas9.02.16 AU2.89 AU35.9°16.0°10 Apr 20197.92.54 AU1.61 AU152.1°10.7°
(29) Amphitrite9.92.72 AU1.78 AU154.3°9.3°15 Jun 20189.52.72 AU1.71 AU170.3°3.6°
(15) Eunomia9.93.10 AU2.15 AU154.5°8.1°8 May 20189.83.11 AU2.13 AU164.2°5.1°
(6) Hebe10.11.93 AU2.70 AU33.5°16.8°28 Dec 20188.42.22 AU1.26 AU162.0°7.8°
(3) Juno10.12.25 AU2.74 AU51.6°20.6°17 Nov 20187.41.98 AU1.04 AU156.9°11.3°
(9) Metis10.22.68 AU1.73 AU154.1°9.5°17 Jun 20189.72.67 AU1.66 AU177.4°1.0°
(7) Iris10.32.13 AU2.83 AU38.0°17.1°5 Apr 20199.42.82 AU1.83 AU172.3°2.7°
(13) Egeria10.32.66 AU1.66 AU168.9°4.2°19 May 201810.22.65 AU1.64 AU173.0°2.7°
(39) Laetitia10.62.99 AU2.07 AU149.9°9.8°3 May 201810.33.00 AU2.02 AU165.9°4.7°
(16) Psyche10.63.23 AU2.26 AU161.2°5.8°10 May 201810.43.24 AU2.24 AU175.6°1.4°
(192) Nausikaa10.82.54 AU1.58 AU157.8°8.6°11 Jun 201810.52.50 AU1.50 AU168.7°4.6°
(14) Irene10.92.62 AU2.01 AU116.0°20.3°24 Jul 201810.02.72 AU1.71 AU171.7°3.1°
(324) Bamberga11.01.83 AU2.79 AU15.8°8.7°21 Jan 201910.42.65 AU1.67 AU171.8°3.0°
(187) Lamberta11.12.07 AU1.19 AU139.6°18.5°20 Apr 201810.12.07 AU1.07 AU177.0°1.4°
(88) Thisbe11.12.37 AU1.67 AU121.9°21.3°20 Jul 20189.72.33 AU1.32 AU176.7°1.5°
(20) Massalia11.12.12 AU2.55 AU54.2°22.8°20 May 20199.72.63 AU1.62 AU179.1°0.3°
(8) Flora11.32.27 AU2.61 AU59.9°22.7°12 May 20199.72.53 AU1.53 AU171.5°3.4°
(532) Herculina11.32.84 AU3.82 AU11.4°4.0°6 Feb 20198.92.40 AU1.43 AU166.2°5.6°
(704) Interamnia11.32.72 AU3.72 AU7.4°2.7°15 Jan 201910.33.06 AU2.08 AU173.7°2.0°
(103) Hera11.42.68 AU1.69 AU164.1°5.9°14 May 201811.32.69 AU1.68 AU171.4°3.2°
(44) Nysa11.42.07 AU2.89 AU29.6°14.0°24 Apr 20199.92.43 AU1.42 AU173.7°2.6°
(18) Melpomene11.42.79 AU2.31 AU107.7°20.2°2 Jul 20199.22.26 AU1.26 AU165.8°6.3°
(26) Proserpina11.52.45 AU1.65 AU132.8°17.7°7 Jul 201810.52.47 AU1.46 AU174.8°2.2°
(113) Amalthea11.52.24 AU1.26 AU159.0°9.3°11 Jun 201811.22.25 AU1.24 AU173.7°2.9°
(89) Julia11.52.36 AU3.34 AU11.6°5.0°31 Jan 201910.22.82 AU1.84 AU179.5°0.2°
(10) Hygiea11.53.20 AU3.46 AU66.7°16.9°24 Sep 201810.13.32 AU2.32 AU174.6°1.6°
(349) Dembowska11.62.89 AU3.70 AU32.1°10.7°27 Feb 201910.33.12 AU2.14 AU170.2°3.1°
(54) Alexandra11.62.49 AU1.65 AU138.3°15.7°23 Apr 201811.22.56 AU1.59 AU161.1°7.3°
(21) Lutetia11.72.58 AU1.83 AU128.3°17.9°11 Apr 201810.82.65 AU1.65 AU175.7°1.6°
(22) Kalliope11.73.11 AU2.49 AU119.1°16.5°1 Apr 201810.93.08 AU2.10 AU163.4°5.3°
(60) Echo11.82.66 AU1.66 AU168.8°4.2°17 May 201811.62.65 AU1.64 AU175.9°1.6°
(12) Victoria11.82.01 AU2.68 AU39.8°18.8°22 Nov 201810.12.45 AU1.46 AU178.9°0.5°
(230) Athamantis11.82.33 AU2.06 AU92.2°25.7°26 Aug 201810.22.28 AU1.29 AU163.2°7.4°
(51) Nemausa11.82.21 AU1.92 AU92.5°27.3°30 Jul 201910.62.46 AU1.46 AU167.1°5.3°
(216) Kleopatra11.82.09 AU3.02 AU19.9°9.5°10 Jan 201910.62.45 AU1.50 AU159.2°8.2°
(40) Harmonia11.82.16 AU2.93 AU33.9°15.2°8 Dec 20189.42.23 AU1.25 AU177.5°1.1°
(423) Diotima11.92.95 AU2.07 AU144.2°11.6°26 Jun 201811.32.95 AU1.94 AU172.7°2.5°
(393) Lampetia11.92.35 AU1.46 AU142.3°15.3°24 Apr 201811.22.46 AU1.46 AU179.1°0.4°
(198) Ampella11.92.29 AU1.47 AU133.3°18.8°7 Jul 201810.62.18 AU1.17 AU175.0°2.3°
(760) Massinga11.92.76 AU1.78 AU160.1°7.2°23 May 201811.92.75 AU1.78 AU160.4°7.1°


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.