Midas
Add to an observing list or journal →1981 Midas (1973 EA)
Where is it now
- Distance from Sun
- 2.905 AU
- True anomaly
- 185.68°
- Distance from Earth
- 2.851 AU
- As of
- 11 October 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
- 08h 58m 51s
- Declination
- +59° 58′ 28″
- Constellation
- Ursa Major
- Distance from Earth
- 2.84 AU
- Elongation from the Sun
- 83.49° — well clear of the Sun
Favours the northern hemisphere; low or below the horizon from far south.
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
- 1.776 AU
- Eccentricity
- 0.6504
- Inclination
- 39.82°
- Orbital period
- 864.7 days
- Perihelion
- 0.621 AU
- Aphelion
- 2.932 AU
- Longitude of ascending node
- 356.79°
- Argument of periapsis
- 267.85°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 1.5 LD
- 0.0038 AU
- Tisserand (Jupiter)
- 3.611
Orbit quality
Orbit very well determined (uncertainty code 0).
- Observations used
- 2,498
- Data arc
- 52.83 years
- First observed
- 6 March 1973
- Last observed
- 2 January 2026
- Residual RMS
- 0.38 ″
- Solution · Otto Matic
- 11 March 2026
Physical properties
- Mean radius
- 1.70 km
- Rotation period
- 5.22 hours
Visual & observation
- Absolute magnitude (H)
- 15.28
- Spectral type (SMASS)
- V
Discovery & classification
- Discovered by
- Kowal, C. T.
- Discovery date
- 6 March 1973
- Discovery site
- Palomar
Also known as 1981 · 1973 EA
Close approaches 17 on record
Top-down view of the ecliptic, Earth at the centre, for the 2032-09-14 14:57 UTC close approach of Midas. Catalogue miss distance 33.6 LD · 1.29 × 10⁷ km. The curve is the geocentric path from 2032-09-11 to 2032-09-17, 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 |
|---|---|---|---|---|
| 2032-09-14 14:57:00 | Earth | 0.0864 AU | 33.6 LD | 26.4 km/s |
| 2058-09-23 08:00:00 | Earth | 0.1199 AU | 46.7 LD | 30.7 km/s |
| 2063-03-14 10:17:00 | Earth | 0.0825 AU | 32.1 LD | 30.2 km/s |
| 2089-03-20 14:00:00 | Earth | 0.0723 AU | 28.1 LD | 26.8 km/s |
| 2103-09-14 00:46:00 | Earth | 0.1338 AU | 52.1 LD | 25.4 km/s |
| 2129-09-20 14:31:00 | Earth | 0.0485 AU | 18.9 LD | 29 km/s |
| 2134-03-11 20:43:00 | Earth | 0.1522 AU | 59.2 LD | 31.8 km/s |
| 2160-03-21 01:27:00 | Earth | 0.0722 AU | 28.1 LD | 26.8 km/s |
| 2174-09-15 06:22:00 | Earth | 0.092 AU | 35.8 LD | 26.3 km/s |
| 2200-09-25 11:56:00 | Earth | 0.1431 AU | 55.7 LD | 31.2 km/s |
Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.
Sources
- visual properties: JPL SBDB (lookup)
- physical properties: JPL SBDB (lookup)
- physical properties: JPL SBDB (lookup)
- visual properties: JPL SBDB (lookup)
- orbital elements: JPL SBDB