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Asteroid Near-Earth

2017 BG136

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(2017 BG136)

2017 BG136 is an asteroid in the Aten orbit class. Its orbit takes it from 0.94 AU to 1.05 AU from the Sun; one orbit takes 362.4 days. Orbit from the JPL solution of 15 April 2021.

Where is it now

Distance from Sun
1.044 AU
True anomaly
160.29°
Distance from Earth
0.759 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.

Sun Earth — 0.992 AU from the Sun Earth 2017 BG136 — 1.044 AU from the Sun 2017 BG136
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2017 BG136 is 0.759 AU from Earth today (6.3 light-minutes).

In the sky

Right ascension
09h 33m 04s
Declination
-18° 19′ 35″
Constellation
Hydra
Distance from Earth
0.76 AU
Elongation from the Sun
71.91° — well clear of the Sun

Favours the southern hemisphere; low or below the horizon from far north.

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
0.995 AU
Eccentricity
0.0525
Inclination
27.61°
Orbital period
362.4 days
Perihelion
0.943 AU
Aphelion
1.047 AU
Longitude of ascending node
130.03°
Argument of periapsis
145.34°
Epoch · J2000
2457785.5
Orbit class · ATE
Aten
Earth MOID · 20.1 LD
0.0515 AU
Tisserand (Jupiter)
6.004

Orbit quality

Orbit very uncertain — the object may be effectively lost (uncertainty code 8).

Observations used
16
Data arc
24 hours
First observed
31 January 2017
Last observed
1 February 2017
Residual RMS
0.71 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
25.98

Discovery & classification

Aten Near-Earth Object

Sources