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
1999 RM45	19.5	335 - 750 m	20.3	220.2 LD	2 Mar 2021	7.6 LD	14.2	1 Mar 2021	13.5
(231937) 2001 FO32	17.7	765 - 1715 m	21.0	515.5 LD	21 Mar 2021	5.4 LD	12.9	21 Mar 2021	11.7
(285571) 2000 PQ9	18.1	640 - 1425 m	22.2	707.1 LD	21 Jul 2021	26.3 LD	12.9	20 Jul 2021	12.7
2016 AJ193	18.5	530 - 1185 m	24.7	1604.0 LD	21 Aug 2021	8.9 LD	14.5	20 Aug 2021	13.5
(4660) Nereus	18.3	580 - 1295 m	22.6	1163.1 LD	11 Dec 2021	10.6 LD	12.9	7 Dec 2021	12.6
(163899) 2003 SD220	17.9	700 - 1565 m	20.2	519.1 LD	17 Dec 2021	14.1 LD	14.1	13 Dec 2021	13.8

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.