Skip to content
Public Universe
Asteroid Near-Earth

138205

Add to an observing list or journal →

138205 (2000 EZ148)

Where is it now

Distance from Sun
3.629 AU
True anomaly
154.97°
Distance from Earth
3.705 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.

Orbit of Mercury Orbit of Venus Orbit of Mars Sun Earth — 0.998 AU from the Sun Earth 138205 — 3.629 AU from the Sun 138205
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 138205 is 3.705 AU from Earth today (30.8 light-minutes).

In the sky

Right ascension
08h 22m 57s
Declination
+30° 28′ 17″
Constellation
Cancer
Distance from Earth
3.7 AU
Elongation from the Sun
78.43° — 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.

How do I find my coordinates?

Google Maps on a computer

  1. Right-click the spot where you'll be observing.
  2. The first line of the menu is the coordinates, e.g. 51.50722, -0.12758 — click it and they're copied.
  3. Paste them above.

Google Maps on a phone

  1. Press and hold the spot to drop a pin.
  2. The coordinates appear in the search bar (or on the pin's card) — tap to copy, then paste above.

A full Google Maps link works too, but the short maps.app.goo.gl share links don't carry coordinates — copy the numbers instead. We round to about a kilometre; that's all the sky calculation needs.

Know your what3words address? Paste it, e.g. ///filled.count.soap. This is optional — the three words are sent to what3words to convert them, and we don't store the address or the result.

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
2.585 AU
Eccentricity
0.6118
Inclination
11.18°
Orbital period
4.16 years
Perihelion
1.003 AU
Aphelion
4.166 AU
Longitude of ascending node
3.79°
Argument of periapsis
305.9°
Epoch · J2000
2461200.5
Orbit class · APO
Apollo
Earth MOID · 36.6 LD
0.094 AU
Tisserand (Jupiter)
3.107

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
2,892
Data arc
42.84 years
First observed
13 April 1983
Last observed
14 February 2026
Residual RMS
0.38 ″
Solution · Otto Matic
20 August 2026

Visual & observation

Absolute magnitude (H)
15.08
Spectral type (SMASS)
S:

Discovery & classification

Discovered by
CSS
Discovery date
4 March 2000
Discovery site
Catalina

Also known as 2000 EZ148

Apollo Near-Earth Object

Close approaches 15 on record

Flyby geometry
Ecliptic flyby of 138205 at 2050-08-21 07:56 UTC Top-down view of the ecliptic, Earth at the centre, for the 2050-08-21 07:56 UTC close approach of 138205. Catalogue miss distance 51.7 LD · 1.99 × 10⁷ km. The curve is the geocentric path from 2050-08-18 to 2050-08-24, 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. At closest approach the object is south of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 51.7 LD · 1.99 × 10⁷ km 2050-08-21 07:56 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2050-08-21 07:56 UTC close approach of 138205. Catalogue miss distance 51.7 LD · 1.99 × 10⁷ km. The curve is the geocentric path from 2050-08-18 to 2050-08-24, 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. At closest approach the object is south of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate.

JPL Horizons

When (UTC) Body Distance Lunar distances Relative speed
2050-08-21 07:56:00 Earth 0.1329 AU 51.7 LD 9.4 km/s
2073-10-14 12:42:00 Juptr 1.9844 AU 772.3 LD 7.3 km/s
2075-07-26 19:13:00 Earth 0.181 AU 70.4 LD 9.7 km/s
2086-01-04 06:01:00 Juptr 1.3357 AU 519.8 LD 4.4 km/s
2098-04-02 06:51:00 Juptr 1.6432 AU 639.5 LD 4.6 km/s
2156-11-14 15:31:00 Juptr 1.9469 AU 757.7 LD 7.2 km/s
2169-02-06 08:22:00 Juptr 1.3223 AU 514.6 LD 4.5 km/s
2181-05-06 01:24:00 Juptr 1.6456 AU 640.4 LD 4.6 km/s
2187-09-14 05:21:00 Earth 0.1208 AU 47.0 LD 14 km/s

Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.

Sources