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 | 19.8 | 295 - 660 m | 13.8 | 8.5 LD | 2 Mar 2021 | 7.6 LD | 14.5 | 1 Mar 2021 | 13.8 |
| (231937) 2001 FO32 | 17.7 | 765 - 1715 m | 17.7 | 154.0 LD | 21 Mar 2021 | 5.4 LD | 12.9 | 21 Mar 2021 | 11.7 |
| (285571) 2000 PQ9 | 18.1 | 640 - 1425 m | 21.0 | 452.4 LD | 21 Jul 2021 | 26.3 LD | 12.9 | 20 Jul 2021 | 12.7 |
| 2016 AJ193 | 18.5 | 530 - 1185 m | 24.3 | 1330.0 LD | 21 Aug 2021 | 8.9 LD | 14.5 | 20 Aug 2021 | 13.5 |
| (143649) 2003 QQ47 | 17.4 | 870 - 1950 m | 19.7 | 391.9 LD | 23 Sep 2021 | 38.3 LD | 13.7 | 23 Sep 2021 | 13.7 |
| 2019 XS | 23.7 | 50 - 110 m | 25.8 | 338.9 LD | 9 Nov 2021 | 1.5 LD | 14.4 | 9 Nov 2021 | 13.8 |
| (4660) Nereus | 18.3 | 580 - 1295 m | 22.9 | 1099.1 LD | 11 Dec 2021 | 10.6 LD | 12.9 | 7 Dec 2021 | 12.6 |
| (163899) 2003 SD220 | 17.9 | 700 - 1565 m | 20.4 | 554.3 LD | 17 Dec 2021 | 14.1 LD | 14.1 | 13 Dec 2021 | 13.8 |
| (7482) 1994 PC1 | 16.5 | 1 - 3 km | 20.4 | 1018.5 LD | 18 Jan 2022 | 4.8 LD | 10.0 | 18 Jan 2022 | 9.9 |
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.
