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Public Universe
Asteroid Near-Earth

2019 CR4

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(2019 CR4)

Where is it now

Distance from Sun
0.861 AU
True anomaly
131.2°
Distance from Earth
0.952 AU
As of
16 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 — 0.997 AU from the Sun Earth 2019 CR4 — 0.861 AU from the Sun 2019 CR4
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2019 CR4 is 0.952 AU from Earth today (7.9 light-minutes).

In the sky

Right ascension
10h 19m 36s
Declination
+15° 02′ 34″
Constellation
Leo
Distance from Earth
0.95 AU
Elongation from the Sun
52.47° — near the Sun — look low at dusk or dawn

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
0.755 AU
Eccentricity
0.4014
Inclination
5.78°
Orbital period
239.7 days
Perihelion
0.452 AU
Aphelion
1.058 AU
Longitude of ascending node
320.14°
Argument of periapsis
352.96°
Epoch · J2000
2458520.5
Orbit class · ATE
Aten
Earth MOID · 12.1 LD
0.031 AU
Tisserand (Jupiter)
7.585

Orbit quality

Orbit very uncertain — the object may be effectively lost (uncertainty code 9).

Observations used
17
Data arc
7 days
First observed
4 February 2019
Last observed
11 February 2019
Residual RMS
0.46 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
26.4

Discovery & classification

Aten Near-Earth Object

Close approaches 23 on record

Flyby geometry
Ecliptic flyby of 2019 CR4 at 2099-01-05 06:54 UTC Top-down view of the ecliptic, Earth at the centre, for the 2099-01-05 06:54 UTC close approach of 2019 CR4. Catalogue miss distance 39.5 LD · 1.52 × 10⁷ km. The curve is the geocentric path from 2099-01-02 to 2099-01-08, 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 north of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 39.5 LD · 1.52 × 10⁷ km 2099-01-05 06:54 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2099-01-05 06:54 UTC close approach of 2019 CR4. Catalogue miss distance 39.5 LD · 1.52 × 10⁷ km. The curve is the geocentric path from 2099-01-02 to 2099-01-08, 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 north 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
2097-08-12 02:15:00 Venus 0.0982 AU 38.2 LD 12.4 km/s
2099-01-05 06:54:00 Earth 0.1014 AU 39.5 LD 12.1 km/s
2101-01-20 14:42:00 Earth 0.0664 AU 25.8 LD 8.4 km/s
2105-03-02 16:47:00 Earth 0.1128 AU 43.9 LD 12.9 km/s
2189-03-02 15:17:00 Earth 0.0697 AU 27.1 LD 11.3 km/s
2191-03-01 02:39:00 Earth 0.2394 AU 93.2 LD 17.3 km/s
2193-02-22 06:50:00 Earth 0.4205 AU 163.6 LD 23.6 km/s
2193-03-18 23:39:00 Venus 0.1056 AU 41.1 LD 16.4 km/s
2196-01-20 19:04:00 Venus 0.104 AU 40.5 LD 18 km/s
2199-03-10 11:18:00 Mercury 0.0762 AU 29.6 LD 20.2 km/s

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

Sources