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Asteroid Near-Earth

2007 RO17

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(2007 RO17)

Where is it now

Distance from Sun
0.873 AU
True anomaly
276.04°
Distance from Earth
1.184 AU
As of
21 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.

Sun Earth — 0.995 AU from the Sun Earth 2007 RO17 — 0.873 AU from the Sun 2007 RO17
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2007 RO17 is 1.184 AU from Earth today (9.8 light-minutes).

In the sky

Right ascension
10h 59m 54s
Declination
+08° 11′ 51″
Constellation
Leo
Distance from Earth
1.18 AU
Elongation from the Sun
46.07° — near the Sun — look low at dusk or dawn

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.

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
0.927 AU
Eccentricity
0.1967
Inclination
2.44°
Orbital period
325.8 days
Perihelion
0.744 AU
Aphelion
1.109 AU
Longitude of ascending node
354.24°
Argument of periapsis
196.36°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 9.6 LD
0.0247 AU
Tisserand (Jupiter)
6.442

Orbit quality

Orbit poorly determined (uncertainty code 7).

Observations used
21
Data arc
4 days
First observed
12 September 2007
Last observed
16 September 2007
Residual RMS
0.62 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
25.8

Discovery & classification

Aten Near-Earth Object

Sources