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Asteroid Near-Earth

333889

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333889 (1998 SV4)

Where is it now

Distance from Sun
1.34 AU
True anomaly
180.79°
Distance from Earth
0.639 AU
As of
17 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 — 0.996 AU from the Sun Earth 333889 — 1.34 AU from the Sun 333889
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 333889 is 0.639 AU from Earth today (5.3 light-minutes).

In the sky

Right ascension
21h 00m 33s
Declination
-18° 08′ 25″
Constellation
Capricornus
Distance from Earth
0.65 AU
Elongation from the Sun
107.07° — 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
0.816 AU
Eccentricity
0.642
Inclination
53.3°
Orbital period
269.5 days
Perihelion
0.292 AU
Aphelion
1.341 AU
Longitude of ascending node
177.24°
Argument of periapsis
359.52°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 130.5 LD
0.3354 AU
Tisserand (Jupiter)
6.736

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
1,303
Data arc
28.07 years
First observed
19 September 1998
Last observed
15 October 2026
Residual RMS
0.46 ″
Solution · Otto Matic
16 October 2026

Physical properties

Mean radius
0.46 km
Rotation period
2.82 hours

Visual & observation

Geometric albedo
0.11
Absolute magnitude (H)
18.24

Discovery & classification

Discovered by
LINEAR
Discovery date
19 September 1998
Discovery site
Socorro

Also known as 1998 SV4

Aten Near-Earth Object

Close approaches 38 on record

When (UTC) Body Distance Lunar distances Relative speed
2031-12-20 22:03:00 Mars 0.0531 AU 20.7 LD 21.5 km/s
2050-01-10 20:50:00 Merc 0.0949 AU 36.9 LD 61.4 km/s
2050-01-10 20:50:00 Mercury 0.0949 AU 36.9 LD 61.4 km/s
2061-10-31 08:41:00 Mercury 0.0928 AU 36.1 LD 60.9 km/s
2061-10-31 08:41:00 Merc 0.0928 AU 36.1 LD 60.9 km/s
2069-08-02 17:14:00 Mars 0.0529 AU 20.6 LD 21.5 km/s
2073-08-20 20:58:00 Mercury 0.0971 AU 37.8 LD 60.5 km/s
2073-08-20 20:58:00 Merc 0.0971 AU 37.8 LD 60.5 km/s
2107-03-17 11:21:00 Mars 0.0673 AU 26.2 LD 21.4 km/s
2108-04-24 21:46:00 Mercury 0.0982 AU 38.2 LD 61.8 km/s

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

Sources