Asteroid 433 Eros
Asteroid 433 Eros is an S-type asteroid located in the inner part of the asteroid belt. It was discovered on August 13, 1898 by Gustav Witt in Berlin and named after the Greek god of love. Eros is approximately 34.4 × 11.2 × 11.2 km in size, making it one of the larger near-Earth asteroids. Its orbital period is 1.76 years, and its average distance from the Sun is about 1.46 astronomical units (AU). Eros is notable for being the first asteroid to be orbited and landed on by a spacecraft, NASA's NEAR Shoemaker, in 2000.
Asteroid 433 Eros is in the constellation of
Sagittarius,
at a distance of
Finder Charts
View interactive star map
High precision deep sky finder chart, 60 arcmin wide, showing where Asteroid 433 Eros is right now. Click on the image to see a more detailed fullscreen tracker view.
Also check out Where is Asteroid 433 Eros?, a page that provides all the information needed to find Asteroid 433 Eros 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 433 Eros from
Greenwich, UK (all times relative to the local timezone Europe/London):
Azimuth: 113.4°
Max altitude: 15.2°
Azimuth: 246.7°
- 433 Eros is
above the horizon from Greenwich, UK.
- Right now it is placed in the South direction at an altitude of 15.16° above the horizon.
- Given its current magnitude, 433 Eros is visible with the help of a telescope having an aperture of 8 inches (200mm) or more.
- Go to interactive sky chart
If you need to access this information frequently for your observations, you can create a simple
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Distance from Earth
- 433 Eros is above the horizon from Greenwich, UK.
- Right now it is placed in the South direction at an altitude of 15.16° above the horizon.
- Given its current magnitude, 433 Eros is visible with the help of a telescope having an aperture of 8 inches (200mm) or more.
- Go to interactive sky chart
The distance of Asteroid 433 Eros from Earth is currently
The following chart shows the distance of Asteroid 433 Eros 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 433 Eros from Earth is also available as a real time updated value in the Live Position and Data Tracker.
Closest Approach
Between 1 January 1900 and 31 December 2099, the closest approach of Asteroid 433 Eros to Earth happens on Mon Jan 24 2056 at a distance of 0.149800 Astronomical Units, or 22,409,694 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 433 Eros, 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 433 Eros at epoch 24 February 2023 00:00 UTC (JD: 2460000.5). Source: JPL Small-Body Database
| Element | Symbol | Value |
|---|---|---|
| Orbit eccentricity | e | 0.22278189 |
| Orbit inclination | i | 10.82782330° |
| Perihelion distance | q | 1.13328437 AU 169,536,929 km |
| Aphelion distance | Q |
1.78297390 AU 266,729,100 km |
| Semi-major axis | a |
1.45812914 AU 218,133,014 km |
| Orbital period | period |
1.7608 years 643.1206 days |
| Date of perihelion transit | Tp | 2022-Aug-11 02:26:26 2,459,802.6017 JD |
| Next perihelion transit | 2024-May-15 05:20 2,460,445.7223 JD |
|
| Argument of perihelion | peri | 178.92699517952° |
| Longitude of the ascending node | node | 304.28704011911° |
| Mean anomaly | M | 110.77765267464° |
| Mean motion | n | 0.55977061°/day |
Orbit Visualization
View Asteroid 433 Eros in the 3D Solar System Simulator
Physical Data
The following shows the known values of the most important physical parameters of Asteroid 433 Eros. Source: JPL Small-Body Database
| Physical Parameter | Value | Relative to Earth |
|---|---|---|
| Diameter | 16.84 km | 0.0013 |
| Sideral Rotation | 5.2700 hours | 0.2202 |
| Absolute Magnitude | 11.16 | |
| Geometric Albedo | 0.25 |
15 Days Ephemeris
The following table lists the ephemerides of Asteroid 433 Eros 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 Jan 31 | 19h 37m 42s | -24° 25’ 29” | 14.07 | Sagittarius |
| 2025 Feb 01 | 19h 40m 15s | -24° 17’ 13” | 14.07 | Sagittarius |
| 2025 Feb 02 | 19h 42m 47s | -24° 08’ 48” | 14.08 | Sagittarius |
| 2025 Feb 03 | 19h 45m 19s | -24° 00’ 15” | 14.08 | Sagittarius |
| 2025 Feb 04 | 19h 47m 51s | -23° 51’ 34” | 14.09 | Sagittarius |
| 2025 Feb 05 | 19h 50m 22s | -23° 42’ 45” | 14.09 | Sagittarius |
| 2025 Feb 06 | 19h 52m 53s | -23° 33’ 48” | 14.10 | Sagittarius |
| 2025 Feb 07 | 19h 55m 22s | -23° 24’ 42” | 14.10 | Sagittarius |
| 2025 Feb 08 | 19h 57m 51s | -23° 15’ 30” | 14.11 | Sagittarius |
| 2025 Feb 09 | 20h 00m 20s | -23° 06’ 09” | 14.11 | Sagittarius |
| 2025 Feb 10 | 20h 02m 48s | -22° 56’ 40” | 14.12 | Sagittarius |
| 2025 Feb 11 | 20h 05m 16s | -22° 47’ 05” | 14.12 | Sagittarius |
| 2025 Feb 12 | 20h 07m 44s | -22° 37’ 21” | 14.12 | Sagittarius |
| 2025 Feb 13 | 20h 10m 09s | -22° 27’ 29” | 14.13 | Capricornus |
Additional Resources
- Position and finder charts (see also Where is Asteroid 433 Eros?)
- Distance from Earth (see also How far is Asteroid 433 Eros from Earth?)
- When does Asteroid 433 Eros rise and set?
- Brightness (see also How bright is Asteroid 433 Eros?)
- Orbital elements. Detailed information about Asteroid 433 Eros orbital parameters.
- Interactive orbit visualization. 3d visualization showing the orbit of Asteroid 433 Eros with respect to the major Solar System objects.
- Physical data. Detailed information about physical properties of Asteroid 433 Eros, such as mass and geometric properties.
- 15 days ephemerides. Table showing celestial coordinates and magnitude of Asteroid 433 Eros for the past and next 7 days.
- Interactive sky chart. An online planetarium application that shows where to locate Asteroid 433 Eros in the sky from your location.
- Live position tracker. A high precision sky chart that uses real deep sky imagery to help locate Asteroid 433 Eros with your telescope or on your astrophotographies.