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Asteroid Near-Earth

2015 JR1

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(2015 JR1)

Where is it now

Distance from Sun
0.82 AU
True anomaly
311.11°
Distance from Earth
0.34 AU
As of
22 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 2015 JR1 — 0.82 AU from the Sun 2015 JR1
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2015 JR1 is 0.34 AU from Earth today (2.8 light-minutes).

In the sky

Right ascension
10h 44m 05s
Declination
+08° 30′ 32″
Constellation
Leo
Distance from Earth
0.34 AU
Elongation from the Sun
50.19° — 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
0.94 AU
Eccentricity
0.1713
Inclination
11.95°
Orbital period
332.8 days
Perihelion
0.779 AU
Aphelion
1.101 AU
Longitude of ascending node
228.99°
Argument of periapsis
227.82°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 7.0 LD
0.018 AU
Tisserand (Jupiter)
6.356

Orbit quality

Orbit reasonably well determined (uncertainty code 5).

Observations used
28
Data arc
9 days
First observed
13 May 2015
Last observed
22 May 2015
Residual RMS
0.71 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
26.1

Discovery & classification

Aten Near-Earth Object

Close approaches 98 on record

Flyby geometry
Ecliptic flyby of 2015 JR1 at 2035-05-08 13:53 UTC Top-down view of the ecliptic, Earth at the centre, for the 2035-05-08 13:53 UTC close approach of 2015 JR1. Catalogue miss distance 73.4 LD · 2.82 × 10⁷ km. The curve is the geocentric path from 2035-05-05 to 2035-05-11, 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. Sun 73.4 LD · 2.82 × 10⁷ km 2035-05-08 13:53 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2035-05-08 13:53 UTC close approach of 2015 JR1. Catalogue miss distance 73.4 LD · 2.82 × 10⁷ km. The curve is the geocentric path from 2035-05-05 to 2035-05-11, 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.

JPL Horizons

When (UTC) Body Distance Lunar distances Relative speed
2035-05-08 13:53:00 Earth 0.1886 AU 73.4 LD 11.4 km/s
2036-01-05 11:50:00 Earth 0.2544 AU 99.0 LD 7.7 km/s
2036-09-25 12:11:00 Earth 0.1777 AU 69.2 LD 8.5 km/s
2045-05-11 13:55:00 Earth 0.2995 AU 116.6 LD 14.4 km/s
2046-02-05 10:48:00 Earth 0.2597 AU 101.1 LD 5.4 km/s
2046-06-13 11:03:00 Earth 0.1959 AU 76.2 LD 6.3 km/s
2046-10-15 21:48:00 Earth 0.1518 AU 59.1 LD 8 km/s
2047-10-13 15:53:00 Venus 0.0816 AU 31.8 LD 9.6 km/s
2055-05-16 09:49:00 Earth 0.4114 AU 160.1 LD 17.5 km/s
2056-05-17 17:52:00 Earth 0.1151 AU 44.8 LD 6.3 km/s

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

Sources