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Dwarf Planets and Asteroids » 

Asteroid 29 Amphitrite

Above the horizon.  Rise: 1:03 | Tran: 9:02 | Set: 17:01
Alt: 2.38°   Az: 56.90°   Direction: East-North-East

Asteroid 29 Amphitrite is in the constellation of Cancer, at a distance of 411,155,850.0 kilometers from Earth. The current Right Ascension is 09h 04m 14s and the Declination is +21° 51’ 23” (apparent coordinates). The magnitude of Asteroid 29 Amphitrite is 11.07 (data provided by JPL Horizons).

Finder chart of 29 Amphitrite in Cancer on October,06 2024
Map showing Asteroid 29 Amphitrite in Cancer on October, 06 2024. Field of view: 50x30 degrees
View interactive star map

Asteroid 29 Amphitrite was discovered on March 1, 1854, by Albert Marth, a German astronomer. It is named after the sea-goddess Amphitrite in Greek mythology. With a diameter of approximately 208 km, Amphitrite is one of the largest main-belt asteroids. It has a relatively high albedo, which indicates that its surface is composed of bright and reflective materials. Amphitrite has an orbital period of 4.02 years.

Celestial Coordinates

Apparent

09h 04m 14s
+21° 51’ 23”
16h 17m 35s
01h 21m 50s

J2000

09h 02m 49s
+21° 57’ 20”

Additional Information

Cancer
11.07

Rise and Set Times

Today's rise, transit and set times of Asteroid 29 Amphitrite from Greenwich, UK (all times relative to the local timezone Europe/London):

Azimuth: 68.1°
Max altitude: 60.3°
Azimuth: 291.8°
  • 29 Amphitrite is above the horizon from Greenwich, UK.
  • Right now it is placed in the East-North-East direction at an altitude of 2.38° above the horizon.
  • Given its current magnitude, 29 Amphitrite is visible with the help of a binocular with a 70-80mm aperture or a small telescope.
  • Go to interactive sky chart

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.

Finder Charts

Finder chart of 29 Amphitrite
Sky map showing Asteroid 29 Amphitrite in Cancer on October, 06 2024. Field of view: 10x6 degrees. View in interactive sky chart

High precision deep sky finder chart, 60 arcmin wide, showing where Asteroid 29 Amphitrite is right now. Click on the image to see a more detailed fullscreen tracker view.

29 Amphitrite
RA: 09h 02m 49s
Dec: +21° 57’ 20”
Deep sky finder chart for Asteroid 29 Amphitrite. Field of view: 60x40 arcmins. View in deep sky object tracker

Also check out Where is Asteroid 29 Amphitrite?, a page that provides all the information needed to find Asteroid 29 Amphitrite in the sky and additional links to sky charts.

Distance from Earth

The distance of Asteroid 29 Amphitrite from Earth is currently 411,155,850.0 kilometers, equivalent to 2.7484071002 Astronomical Units. Light takes 22m 51.468s to travel from Asteroid 29 Amphitrite and arrive to us.

411,155,850.0
2.7484071002
22m 51.468s

The following chart shows the distance of Asteroid 29 Amphitrite 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.

Chart of the distance of Asteroid 29 Amphitrite from Earth in Astronomical Units (au)

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 29 Amphitrite 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 29 Amphitrite to Earth happens on Sun Nov 16 1958 at a distance of 1.380642 Astronomical Units, or 206,541,142 kilometers:

Sun Nov 16 1958
206,541,142
1.380642

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 29 Amphitrite, 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.

Chart of the magnitude of Asteroid 29 Amphitrite as a function of time

Orbital Elements

The following table lists the orbital elements of Asteroid 29 Amphitrite at epoch 24 February 2023 00:00 UTC (JD: 2460000.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.07368241
Orbit inclination i 6.08278404°
Perihelion distance q 2.36558692 AU
353,886,766 km
Aphelion distance Q 2.74192037 AU
410,185,450 km
Semi-major axis a 2.55375364 AU
382,036,108 km
Orbital period period 4.0811 years
1,490.6199 days
Date of perihelion transit Tp 2024-Apr-03 09:23:23
2,460,403.8912 JD
Next perihelion transit 2028-May-03 00:16
2,461,894.5112 JD
Argument of perihelion peri 63.01536066885°
Longitude of the ascending node node 356.32872362373°
Mean anomaly M 262.57687709748°
Mean motion n 0.24151025°/day

Orbit Visualization

Orbit Diagram of Asteroid 29 Amphitrite
View Asteroid 29 Amphitrite in the 3D Solar System Simulator

15 Days Ephemeris

The following table lists the ephemerides of Asteroid 29 Amphitrite 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
2024 Sep 29 08h 52m 51s +22° 33’ 29” 11.09 Cancer
2024 Sep 30 08h 54m 30s +22° 27’ 31” 11.09 Cancer
2024 Oct 01 08h 56m 09s +22° 21’ 32” 11.09 Cancer
2024 Oct 02 08h 57m 47s +22° 15’ 33” 11.08 Cancer
2024 Oct 03 08h 59m 24s +22° 09’ 32” 11.08 Cancer
2024 Oct 04 09h 01m 01s +22° 03’ 31” 11.07 Cancer
2024 Oct 05 09h 02m 37s +21° 57’ 30” 11.07 Cancer
2024 Oct 06 09h 04m 13s +21° 51’ 29” 11.07 Cancer
2024 Oct 07 09h 05m 48s +21° 45’ 27” 11.06 Cancer
2024 Oct 08 09h 07m 23s +21° 39’ 26” 11.06 Cancer
2024 Oct 09 09h 08m 56s +21° 33’ 25” 11.05 Cancer
2024 Oct 10 09h 10m 30s +21° 27’ 23” 11.05 Cancer
2024 Oct 11 09h 12m 01s +21° 21’ 22” 11.04 Cancer
2024 Oct 12 09h 13m 33s +21° 15’ 22” 11.04 Cancer

Additional Resources