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
2023 HO1825.325 - 50 m16.83.2 LD4 Jun 20231.3 LD13.84 Jun 202313.6
(488453) 1994 XD19.3375 - 845 m15.949.4 LD12 Jun 20238.2 LD14.310 Jun 202313.5
2020 DB519.2380 - 855 m16.030.0 LD15 Jun 202311.2 LD13.814 Jun 202313.8
2023 HO620.8180 - 405 m18.560.3 LD5 Jul 20235.3 LD13.55 Jul 202313.4
(154244) 2002 KL617.6790 - 1760 m16.2110.4 LD5 Aug 202324.8 LD14.06 Aug 202314.0
(458732) 2011 MD517.9690 - 1540 m21.2502.1 LD22 Sep 202329.5 LD14.217 Sep 202313.9
1998 HH4921.3145 - 320 m23.6355.8 LD16 Oct 20232.5 LD13.117 Oct 202312.5
(164121) 2003 YT116.31 - 3 km19.4519.3 LD3 Nov 202323.2 LD12.32 Nov 202312.2
(1685) Toro14.34 - 8 km15.4295.5 LD20 Jan 202451.9 LD13.128 Jan 202412.7
(2063) Bacchus17.2945 - 2120 m17.4183.2 LD31 Mar 202446.6 LD14.923 Apr 202413.9
(21374) 1997 WS2217.5850 - 1905 m20.8796.2 LD21 May 202443.0 LD13.520 May 202413.4


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.