Asteroid 1999 WK4
Asteroid 1999 WK4 is in the constellation of Sextans, at a distance of
Finder Charts
The sky charts below show, at different resolutions, the position of asteroid 1999 WK4 in the sky. Click on each chart to access the interactive star map tool.
The following map uses photographic imagery from the Digitized Sky Survey (DSS) to realistically visualize the precise position of asteroid 1999 WK4 against the stars in the background. The horizontal size of the map measures 60 arcminutes. Click on the image to access a more detailed full-screen view.
Equatorial Coordinates
Apparent
J2000
Additional Information
Rise and Set Times
The following table lists today's rise, transit and set times of asteroid 1999 WK4 from Luba, Equatorial Guinea (all times relative to the local timezone Africa/Malabo):
If you need to access this information frequently for your observations, you can create a simple customized Quick Access page, so that you can easily bookmark it in your browser favorites or add a shortcut to your mobile phones' home screen.
Distance from Earth
The distance of asteroid 1999 WK4 from Earth is currently
The following graph shows the distance of asteroid 1999 WK4 from Earth as a function of time. In the chart the distance is measured in Astronomical Units and the data is sampled with an interval of 1 day.
Note: The values in this chart may not be entirely accurate around the time of closest approach for objects passing very close to Earth at high speed (e.g., Near-Earth Objects).
The value of the distance of 1999 WK4 from Earth is also available as a real time updated value in the live position tracker.
Closest Approach to Earth
In the period between January 1, 2000 and December 31, 2099, the closest approach of asteroid 1999 WK4 to Earth will happen on Monday 26 May 2036 at a distance of 0.016364 Astronomical Units, or 2,448,009 kilometers:
Note: the values for the closest approach are computed with a sampling interval of 1 day.
Light Curve
The following chart shows the light curve of asteroid 1999 WK4, i.e., its apparent magnitude as a function of time. The curve is calculated using the latest ephemerides provided by JPL Horizons. The magnitude data is sampled with the interval of 2 days. Because of this sampling, inaccuracies may occur for objects that have large variations of brightness over a few days. For comets, large discrepancies can arise between the calculated brightness and the observations due to their highly dynamic, and not always precisely predictable, behavior.
Orbital Elements
The following table lists the orbital elements of asteroid 1999 WK4 at epoch October, 16 2024 00:00 UTC (JD: 2460600.5). Source: JPL Small-Body Database
| Element | Symbol | Value |
|---|---|---|
| Orbit eccentricity | e | 0.68840424 |
| Orbit inclination | i | 38.88151560° |
| Perihelion distance | q | 0.20016383 AU 29,944,082 km |
| Aphelion distance | Q |
1.08460221 AU 162,254,181 km |
| Semi-major axis | a |
0.64238302 AU 96,099,132 km |
| Orbital period | period |
0.5149 years 188.0570 days |
| Date of perihelion transit | Tp | November 18, 2024 2,460,633.4618 JD |
| Next perihelion transit | May 26, 2025 2,460,821.5188 JD |
|
| Argument of perihelion | peri | 192.6481913155° |
| Longitude of the ascending node | node | 244.89778810003° |
| Mean anomaly | M | 296.90082834283° |
| Mean motion | n | 1.91431322°/day |
Orbit Visualization
The following chart is a 3D animated visualization of the orbit of asteroid 1999 WK4 relative to the other major objects in the Solar System. You can access more advanced features using our 3D Solar System Viewer.
15 Days Ephemeris
The following table lists the ephemerides of asteroid 1999 WK4 computed for the past and next 7 days, with a 24 hours interval. Apparent celestial coordinates are provided.
| Date | Right AscensionR.A. | DeclinationDec. | MagnitudeMag | Constellation |
|---|---|---|---|---|
| Jun 27 2025 | 09h 05m 02s | +01° 44’ 00” | 18.38 | Hydra |
| Jun 28 2025 | 09h 12m 45s | +01° 26’ 51” | 18.39 | Hydra |
| Jun 29 2025 | 09h 20m 21s | +01° 10’ 24” | 18.40 | Hydra |
| Jun 30 2025 | 09h 27m 52s | +00° 54’ 38” | 18.41 | Hydra |
| Jul 01 2025 | 09h 35m 16s | +00° 39’ 32” | 18.42 | Hydra |
| Jul 02 2025 | 09h 42m 33s | +00° 25’ 05” | 18.43 | Hydra |
| Jul 03 2025 | 09h 49m 42s | +00° 11’ 17” | 18.45 | Sextans |
| Jul 04 2025 | 09h 56m 44s | -00° 01’ 53” | 18.46 | Sextans |
| Jul 05 2025 | 10h 03m 39s | -00° 14’ 28” | 18.47 | Sextans |
| Jul 06 2025 | 10h 10m 25s | -00° 26’ 27” | 18.49 | Sextans |
| Jul 07 2025 | 10h 17m 04s | -00° 37’ 54” | 18.50 | Sextans |
| Jul 08 2025 | 10h 23m 35s | -00° 48’ 47” | 18.51 | Sextans |
| Jul 09 2025 | 10h 29m 59s | -00° 59’ 09” | 18.53 | Sextans |
| Jul 10 2025 | 10h 36m 14s | -01° 09’ 01” | 18.55 | Sextans |
Additional Resources on TheSkyLive
- Asteroid 1999 WK4: Complete reference information on TheSkyLive.com.
- Where is asteroid 1999 WK4?: Key information on where to find asteroid 1999 WK4 in the sky.
- Distance of asteroid 1999 WK4 from Earth: Find out how far asteroid 1999 WK4 is from Earth right now.
- How Bright is asteroid 1999 WK4?: Current visual brightness (magnitude) and apparent size.
- Rise and Set Times: Rise and set times of asteroid 1999 WK4 from your location.
- Interactive Sky Map: Planetarium-style interactive visualization of asteroid 1999 WK4's position in the sky.
- Live Position Tracker: High precision real time tracker of asteroid 1999 WK4's position using deep space imagery.
- Ephemeris: 15 days asteroid 1999 WK4's computed ephemeris.
- Orbital elements: Information about asteroid 1999 WK4 orbital parameters.
- Orbit Visualization: 3D interactive visualization showing the orbit of asteroid 1999 WK4 with respect to the major Solar System objects.