Bright NEO

The below near-earth objects are expected to become brighter than magnitude 14.0 in the coming 12 months. If a NEO is currently brighter than magnitude 14 it will be highlighted in yellow. For more information about one of these near-earth objects, click on its designation.

NEO Today Closest Approach Brightest
designation Hₒ diameter est. magn delta (LD) date delta (LD) magn date magn
2015 RN3523.165 - 140 m21.322.8 LD15 Dec 20221.8 LD13.716 Dec 202213.4
2018 YK222.875 - 165 m23.978.1 LD22 Dec 20222.0 LD14.422 Dec 202213.9
2010 XC1521.4140 - 310 m20.066.3 LD27 Dec 20222.0 LD14.127 Dec 202213.4
(199145) 2005 YY12818.4565 - 1265 m21.7536.1 LD16 Feb 202312.0 LD13.914 Feb 202313.3
(488453) 1994 XD19.3370 - 825 m25.01394.1 LD12 Jun 20238.3 LD14.310 Jun 202313.6
2020 DB519.3365 - 820 m23.9854.7 LD15 Jun 202311.1 LD13.814 Jun 202313.8
(458732) 2011 MD517.9690 - 1540 m23.71579.2 LD22 Sep 202329.6 LD14.217 Sep 202313.9
1998 HH4921.3145 - 320 m26.1903.6 LD16 Oct 20232.5 LD13.117 Oct 202312.5


The current positions of these NEOs are plotted in the below all-sky chart:





    Terminology:
            
    diameter est.:  Estimated diameter based on Hₒ and an albedo between 0.25 and 0.05 (So sizes may be over-estimated for icy objects)
    delta:          Distance between dwarf planet and earth in AU    
    magn:           Magnitude (brightness) estimate    
    LD:             Lunar distance (~0.0257 AU)
    AU:             Astronomical Unit (mean distance between earth and sun: 149597870.7 km    
    Hₒ:             Absolute magnitude (magnitude from a distance of 1 AU) 
    

Orbital elements provided by the MPC (Minor Planet Center).
UCAC4 star 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.