2019 BS4 is an asteroid in the Apollo orbit class. Its orbit takes it from 0.61 AU to 1.46 AU from the Sun; one orbit takes 384 days. Orbit from the JPL solution of 10 September 2022.
Where is it now
- Distance from Sun
- 1.426 AU
- True anomaly
- 195.18°
- Distance from Earth
- 2.347 AU
- As of
- 3 November 2026
Two-body Kepler propagation — accurate to ~0.1% for major planets over decades, less so for highly-perturbed bodies. Use JPL Horizons for high precision.
In the sky
- Right ascension
- 14h 08m 04s
- Declination
- -00° 26′ 07″
- Constellation
- Virgo
- Distance from Earth
- 2.34 AU
- Elongation from the Sun
- 16.95° — too close to the Sun to observe
Visible from both hemispheres.
From your location
See how high it is right now, whether it is up after civil twilight, and when it rises and sets where you are.
Your location stays in your browser and is sent only for this calculation. Using a what3words address is optional; if you do, the three words go to what3words to be converted and we don't record them. Set a location first, then you can save an email alert for this object. See our privacy policy.
Two-body approximation, good to about a degree for the planets — enough to find the constellation and know whether it is up.
Orbital elements
- Semi-major axis
- 1.034 AU
- Eccentricity
- 0.4133
- Inclination
- 20.87°
- Orbital period
- 384 days
- Perihelion
- 0.607 AU
- Aphelion
- 1.461 AU
- Longitude of ascending node
- 131.9°
- Argument of periapsis
- 234.71°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 32.7 LD
- 0.0842 AU
- Tisserand (Jupiter)
- 5.791
Orbit quality
Orbit poorly determined (uncertainty code 7).
- Observations used
- 64
- Data arc
- 17 days
- First observed
- 26 January 2019
- Last observed
- 12 February 2019
- Residual RMS
- 0.48 ″
- Solution · Otto Matic
- 10 September 2022
Visual & observation
- Absolute magnitude (H)
- 22.93
Discovery & classification
Close approaches 23 on record
Top-down view of the ecliptic, Earth at the centre, for the 2033-06-08 01:07 UTC close approach of 2019 BS4. Catalogue miss distance 139.4 LD · 5.36 × 10⁷ km. The curve is the geocentric path from 2033-06-05 to 2033-06-11, with a mark at UTC midnights and an arrow for the direction of motion. The circle is the Moon’s mean orbit; the Moon is plotted at closest approach. A ray shows the Sun’s direction. The labelled distance is the full separation. The drawn radius is the part that lies in the ecliptic plane. At closest approach the object is north of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate.
| When (UTC) | Body | Distance | Lunar distances | Relative speed |
|---|---|---|---|---|
| 2030-05-09 22:02:00 | Venus | 0.0894 AU | 34.8 LD | 19.5 km/s |
| 2033-06-08 01:07:00 | Earth | 0.3582 AU | 139.4 LD | 22 km/s |
| 2038-02-13 13:21:00 | Earth | 0.4206 AU | 163.7 LD | 12.7 km/s |
| 2039-01-24 09:33:00 | Earth | 0.2031 AU | 79.0 LD | 13 km/s |
| 2040-01-25 02:37:00 | Earth | 0.1419 AU | 55.2 LD | 18.9 km/s |
| 2041-02-04 05:00:00 | Earth | 0.4294 AU | 167.1 LD | 27.6 km/s |
| 2060-01-22 08:27:00 | Earth | 0.0913 AU | 35.5 LD | 15.2 km/s |
| 2061-01-29 11:24:00 | Earth | 0.2827 AU | 110.0 LD | 23.2 km/s |
| 2177-06-15 18:26:00 | Earth | 0.3049 AU | 118.7 LD | 20.1 km/s |
Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.
Sources
- visual properties: JPL SBDB (lookup)
- orbital elements: JPL SBDB