2026 MB1 is an asteroid in the Aten orbit class. Its orbit takes it from 0.83 AU to 1.17 AU from the Sun; one orbit takes 364.5 days. Orbit from the JPL solution of 9 July 2026.
Where is it now
- Distance from Sun
- 1.139 AU
- True anomaly
- 209.32°
- Distance from Earth
- 0.595 AU
- As of
- 2 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
- 20h 15m 45s
- Declination
- +09° 10′ 46″
- Constellation
- Delphinus
- Distance from Earth
- 0.6 AU
- Elongation from the Sun
- 87.73° — well clear of the Sun
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.
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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
- 0.999 AU
- Eccentricity
- 0.1703
- Inclination
- 14.89°
- Orbital period
- 364.5 days
- Perihelion
- 0.829 AU
- Aphelion
- 1.169 AU
- Longitude of ascending node
- 267.02°
- Argument of periapsis
- 255.2°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 0.7 LD
- 0.0019 AU
- Tisserand (Jupiter)
- 6.045
Orbit quality
Orbit poorly determined (uncertainty code 6).
- Observations used
- 70
- Data arc
- 4 days
- First observed
- 19 June 2026
- Last observed
- 23 June 2026
- Residual RMS
- 0.37 ″
- Solution · Otto Matic
- 9 July 2026
Visual & observation
- Absolute magnitude (H)
- 26.5
Discovery & classification
Close approaches 34 on record
Top-down view of the ecliptic, Earth at the centre, for the 2027-06-21 08:11 UTC close approach of 2026 MB1. Catalogue miss distance 24.4 LD · 9.39 × 10⁶ km. The curve is the geocentric path from 2027-06-18 to 2027-06-24, 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. 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 |
|---|---|---|---|---|
| 2027-06-21 08:11:00 | Earth | 0.0628 AU | 24.4 LD | 10.1 km/s |
| 2028-06-23 06:01:00 | Earth | 0.1307 AU | 50.9 LD | 11.6 km/s |
| 2099-12-04 20:29:00 | Earth | 0.1843 AU | 71.7 LD | 13.1 km/s |
| 2100-12-09 01:25:00 | Earth | 0.1146 AU | 44.6 LD | 11.4 km/s |
| 2101-12-13 08:12:00 | Earth | 0.0537 AU | 20.9 LD | 10 km/s |
| 2102-12-17 17:52:00 | Earth | 0.0408 AU | 15.9 LD | 8.9 km/s |
| 2103-12-23 06:03:00 | Earth | 0.0937 AU | 36.5 LD | 8.2 km/s |
| 2110-06-16 15:56:00 | Earth | 0.1352 AU | 52.6 LD | 7.5 km/s |
| 2111-06-17 21:52:00 | Earth | 0.0704 AU | 27.4 LD | 8 km/s |
| 2112-06-18 18:22:00 | Moon | 0.0076 AU | 3.0 LD | 9.4 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