Asteroid 1999 KW4
Asteroid 1999 KW4 is in the constellation of
Aries,
at a distance of
Finder Charts
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High precision deep sky finder chart, 60 arcmin wide, showing where Asteroid 1999 KW4 is right now. Click on the image to see a more detailed fullscreen tracker view.
Also check out Where is Asteroid 1999 KW4?, a page that provides all the information needed to find Asteroid 1999 KW4 in the sky and additional links to sky charts.
Celestial Coordinates
Apparent
J2000
Additional Information
Rise and Set Times
Today's rise, transit and set times of Asteroid 1999 KW4 from Greenwich, UK (all times relative to the local timezone Europe/London):
- 1999 WK4 is above the horizon from Greenwich, UK.
- Right now it is placed in the East direction at an altitude of 40.96° above the horizon.
- Given its current magnitude, 1999 WK4 is visible with the help of a telescope having an aperture of 20 inches (500mm) or more.
- Go to interactive sky chart
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Distance from Earth
The distance of Asteroid 1999 KW4 from Earth is currently
The following chart shows the distance of Asteroid 1999 KW4 from Earth as a function of time. In the chart the distance data is measured in Astronomical Units and sampled with an interval of 1 day.
The value of the reported distance might be somewhat inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of 1999 WK4 from Earth is also available as a real time updated value in the Live Position and Data Tracker.
Closest Approach
Between 1 January 2000 and 31 December 2099, the closest approach of Asteroid 1999 KW4 to Earth happens on Mon May 26 2036 at a distance of 0.016364 Astronomical Units, or 2,448,009 kilometers:
NOTE: values for the closest approach are computed with a sampling interval of 1 day.
Light Curve
The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid 1999 KW4, according to the most recent ephemerides data. Magnitude data is sampled with a 2 days interval and there might be inaccuracies for objects changing brightness very rapidly during the course of a few days. For comets there could be large discrepancies between the observed and predicted brightness because of their highly dynamic behaviour.
Orbital Elements
The following table lists the orbital elements of Asteroid 1999 KW4 at epoch 16 October 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 | 2024-Nov-18 23:04:57 2,460,633.4618 JD |
| Next perihelion transit | 2025-May-26 00:27 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 |
View Asteroid 1999 KW4 in the 3D Solar System Simulator
15 Days Ephemeris
The following table lists the ephemerides of Asteroid 1999 KW4 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 |
|---|---|---|---|---|
| 2025 May 10 | 01h 27m 05s | +25° 14’ 42” | 17.52 | Pisces |
| 2025 May 11 | 01h 36m 17s | +25° 29’ 16” | 17.42 | Pisces |
| 2025 May 12 | 01h 45m 42s | +25° 40’ 36” | 17.32 | Pisces |
| 2025 May 13 | 01h 55m 19s | +25° 48’ 28” | 17.19 | Triangulum |
| 2025 May 14 | 02h 05m 06s | +25° 52’ 37” | 17.06 | Aries |
| 2025 May 15 | 02h 15m 07s | +25° 52’ 49” | 16.91 | Aries |
| 2025 May 16 | 02h 25m 20s | +25° 48’ 44” | 16.74 | Aries |
| 2025 May 17 | 02h 35m 47s | +25° 40’ 05” | 16.55 | Aries |
| 2025 May 18 | 02h 46m 27s | +25° 26’ 31” | 16.34 | Aries |
| 2025 May 19 | 02h 57m 22s | +25° 07’ 40” | 16.10 | Aries |
| 2025 May 20 | 03h 08m 32s | +24° 43’ 10” | 15.83 | Aries |
| 2025 May 21 | 03h 19m 58s | +24° 12’ 39” | 15.54 | Aries |
| 2025 May 22 | 03h 31m 40s | +23° 35’ 52” | 15.20 | Taurus |
| 2025 May 23 | 03h 43m 35s | +22° 52’ 40” | 14.82 | Taurus |
Additional Resources on TheSkyLive
- Asteroid 1999 KW4: Complete reference information on TheSkyLive.com
- Where is Asteroid 1999 KW4?: Key information on locating Asteroid 1999 KW4 in the sky.
- Distance from Earth: Find out how far Asteroid 1999 KW4 is from Earth right now.
- How Bright is Asteroid 1999 KW4?: Current visual brightness (magnitude) and apparent size.
- Rise and Set Times: Asteroid 1999 KW4's rise and set times from your location.
- Interactive Sky Map: planetarium-style interactive visualization of Asteroid 1999 KW4's position in the sky.
- Live Position Tracker: high precision position tracker with deep space imagery.
- Ephemeris: 15 days Asteroid 1999 KW4's computed ephemeris.
- Orbital elements: information about Asteroid 1999 KW4 orbital parameters.
- Orbit Visualization. 3d interactive visualization showing the orbit of Asteroid 1999 KW4 with respect to the major Solar System objects.