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Asteroid Near-Earth

39796

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39796 (1997 TD)

Where is it now

Distance from Sun
3.177 AU
True anomaly
197.39°
Distance from Earth
4.063 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 39796 — 3.177 AU from the Sun 39796
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 39796 is 4.063 AU from Earth today (33.8 light-minutes).

In the sky

Right ascension
11h 42m 46s
Declination
+03° 29′ 50″
Constellation
Virgo
Distance from Earth
4.06 AU
Elongation from the Sun
24.43° — 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
2.25 AU
Eccentricity
0.4691
Inclination
12.94°
Orbital period
3.38 years
Perihelion
1.195 AU
Aphelion
3.306 AU
Longitude of ascending node
158.84°
Argument of periapsis
171.11°
Epoch · J2000
2461200.5
Orbit class · AMO
Amor
Earth MOID · 72.3 LD
0.1858 AU
Tisserand (Jupiter)
3.444

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
2,317
Data arc
38.87 years
First observed
10 May 1987
Last observed
22 March 2026
Residual RMS
0.39 ″
Solution · Otto Matic
23 March 2026

Physical properties

Mean radius
1.07 km
Rotation period
9.31 days

Visual & observation

Geometric albedo
0.205
Absolute magnitude (H)
15.69

Discovery & classification

Discovered by
NEAT
Discovery date
1 October 1997
Discovery site
Haleakala

Also known as 1997 TD

Amor Near-Earth Object

Sources