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🌎  Greenwich, United Kingdom [change]

Asteroid (NEO) 2021 BB

Asteroid (NEO) 2021 BB is a Near Earth Object. If you've heard news about a potential impact of this asteroid with the Earth, please check out Will Asteroid Asteroid (NEO) 2021 BB Impact Earth?.

Asteroid (NEO) 2021 BB is currently in the constellation of Leo. The current Right Ascension of Asteroid (NEO) 2021 BB is 09h 32m 54s and the Declination is +18° 17’ 34” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current magnitude of Asteroid (NEO) 2021 BB is 30.22 (JPL).

Summary of key facts about Asteroid (NEO) 2021 BB [tip: you can also create a Quick Access page for this data if you access it frequently and would like to have a simpler view]:

09h 32m 54s
+18° 17’ 34”
  • 2021 BB is above the horizon from Greenwich, United Kingdom [change].
  • It is visible looking in the West direction at an altitude of 15° above the horizon.
  • Given its current magnitude, 2021 BB is visible only through long exposure photography.
  • See also 2021 BB rise and set times.
  • Go to interactive sky chart

If you need to access this information frequently for your observations, you can create a simple customized Quick Access page, so that you can easily bookmark it in your browser favorites or add a shortcut to your mobile phones' home screen.

Additional information about Asteroid (NEO) 2021 BB available on TheSkyLive:

Available Resources

Asteroid (NEO) 2021 BB Position and Finder Charts

Below we provide Asteroid (NEO) 2021 BB finder charts showing where the object is right now in the sky with respect to the brightest stars. The first finder chart has a field of view of 50 degrees, while the second one has a field of view of 10 degrees. Click on each finder chart to access a full screen interactive Online Planetarium.

Map showing Asteroid (NEO) 2021 BB in Leo on October, 03 2022
Field of view: 50x30 degrees
View fullscreen
Map showing Asteroid (NEO) 2021 BB in Leo on October, 03 2022
Field of view: 10x6 degrees
View fullscreen
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Also check out Where is Asteroid (NEO) 2021 BB?, a page that provides all the information needed to find Asteroid (NEO) 2021 BB in the sky and additional links to sky charts.

Asteroid (NEO) 2021 BB Distance from Earth

The distance of Asteroid (NEO) 2021 BB from Earth is currently 172,957,731 kilometers, equivalent to 1.156151 Astronomical Units. Light takes 9 minutes and 36.9249 seconds to travel from Asteroid (NEO) 2021 BB and arrive to us.

9 minutes and 36.9249 seconds

The following chart shows the distance of Asteroid (NEO) 2021 BB from Earth as a function of time. In the chart the distance data is measured in Astronomical Units and sampled with an interval of 1 day.

Distance of Asteroid (NEO) 2021 BB from Earth between January 2013 and December 2100

The value of the reported distance might be somewhat inaccurate around the times of closest approach for objects passing extremely close to Earth.

Closest approach of Asteroid (NEO) 2021 BB to Earth

During the next 10 years, the closest approach of Asteroid (NEO) 2021 BB to Earth happens on Mon Jan 14 2030 at a distance of 0.012004 Astronomical Units, or 1,795,775 kilometers:

Mon Jan 14 2030

Asteroid (NEO) 2021 BB brightness

The current visual magnitude of Asteroid (NEO) 2021 BB is 30.22.


The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid (NEO) 2021 BB, according to the most recent ephemerides data. Magnitude data is sampled with a 2 days interval and there might be inaccuracies for objects changing brightness very rapidly during the course of a few days. For comets there could be large discrepancies between the observed and predicted brightness because of their highly dynamic behaviour.

Predicted magnitude of Asteroid (NEO) 2021 BB between January 2013 and December 2100

Asteroid (NEO) 2021 BB rise and set times

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's Asteroid (NEO) 2021 BB rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 71.5°
Max altitude: 56.9°
Azimuth: 288.3°

The rise and set times are defined as the time at which the upper limb of Asteroid (NEO) 2021 BB touches the horizon, considering the effect of the atmospheric refraction. As the atmospheric conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.

Asteroid (NEO) 2021 BB Orbital Elements

The following table lists the orbital elements of Asteroid (NEO) 2021 BB at epoch 20 January 2022 00:00 UTC (JD: 2459600.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.11895602
Orbit inclination i 8.04607630°
Perihelion distance q 0.82137315 AU
122,875,674 km
Aphelion distance Q 1.04317202 AU
156,056,314 km
Semi-major axis a 0.93227259 AU
139,465,994 km
Orbital period period 0.9002 years
328.7856 days
Date of perihelion transit Tp 2021-Aug-25 11:54:09
2,459,451.9959 JD
Next perihelion transit 2022-Jul-20 06:45
2,459,780.7815 JD
Argument of perihelion peri 50.517769013699°
Longitude of the ascending node node 296.51834285442°
Mean anomaly M 162.60280223633°
Mean motion n 1.09493844°/day

Visualization of Asteroid (NEO) 2021 BB Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Asteroid (NEO) 2021 BB with respect of the Sun and the orbits of the major planets. The position of Asteroid (NEO) 2021 BB and the planets along their orbits in this diagram accurately represents the current configuration of the objects in the Solar System. This is an experimental feature and it requires a WebGL enabled browser. Please provide us feedback!

Orbit Diagram of Asteroid (NEO) 2021 BB
View Asteroid (NEO) 2021 BB in the 3D Solar System Simulator

Asteroid (NEO) 2021 BB 15 Days Ephemeris

The following table lists the ephemerides of Asteroid (NEO) 2021 BB computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Asteroid (NEO) 2021 BB in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2022 Sep 26 09h 05m 18s +21° 09’ 38” 30.17 Cancer
2022 Sep 27 09h 09m 01s +20° 47’ 50” 30.18 Cancer
2022 Sep 28 09h 12m 41s +20° 25’ 47” 30.19 Cancer
2022 Sep 29 09h 16m 21s +20° 03’ 29” 30.19 Cancer
2022 Sep 30 09h 19m 59s +19° 40’ 57” 30.20 Cancer
2022 Oct 01 09h 23m 35s +19° 18’ 10” 30.20 Leo
2022 Oct 02 09h 27m 11s +18° 55’ 09” 30.21 Leo
2022 Oct 03 09h 30m 44s +18° 31’ 54” 30.21 Leo
2022 Oct 04 09h 34m 18s +18° 08’ 27” 30.22 Leo
2022 Oct 05 09h 37m 50s +17° 44’ 48” 30.22 Leo
2022 Oct 06 09h 41m 20s +17° 20’ 57” 30.23 Leo
2022 Oct 07 09h 44m 49s +16° 56’ 53” 30.23 Leo
2022 Oct 08 09h 48m 17s +16° 32’ 39” 30.23 Leo
2022 Oct 09 09h 51m 46s +16° 08’ 13” 30.24 Leo