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Dwarf Planets and Asteroids » 

Asteroid 349 Dembowska (1892 T)

Below the horizon.  Rise: 1:46 | Tran: 5:59 | Set: 10:11
Alt: -52.30°   Az: 318.01°   Direction: North-West

Asteroid 349 Dembowska is a main-belt asteroid that was discovered on February 9, 1892, by Max Wolf at the Heidelberg Observatory in Germany. It is named after the Polish astronomer, Anna Dembowska. This asteroid has an irregular shape with dimensions of 139.77±4.3 × 140 × 145.23±17.21 km, and a rotation period of 4.7 hours. Its surface is relatively bright and is composed of silicate minerals and some metallic nickel-iron. Dembowska has an orbital period of 4.32 years and a distance from the Sun of about 2.4 astronomical units.

Asteroid 349 Dembowska (1892 T) is in the constellation of Libra, at a distance of 452,042,261.0 kilometers from Earth. The current Right Ascension is 15h 29m 47s and the Declination is -19° 38’ 02” (apparent coordinates). The magnitude of Asteroid 349 Dembowska (1892 T) is 11.64 (data provided by JPL Horizons).

Finder Charts

Map showing Asteroid 349 Dembowska (1892 T) in Libra on February, 12 2025. Field of view: 50x30 degrees
View interactive star map
Sky map showing Asteroid 349 Dembowska (1892 T) in Libra on February, 12 2025. Field of view: 15x9 degrees. View in interactive sky chart

High precision deep sky finder chart, 60 arcmin wide, showing where Asteroid 349 Dembowska (1892 T) is right now. Click on the image to see a more detailed fullscreen tracker view.

349 Dembowska
RA: 15h 28m 20s
Dec: -19° 32’ 54”
Deep sky finder chart for Asteroid 349 Dembowska (1892 T). Field of view: 60x40 arcmins. View in deep sky object tracker

Also check out Where is Asteroid 349 Dembowska (1892 T)?, a page that provides all the information needed to find Asteroid 349 Dembowska (1892 T) in the sky and additional links to sky charts.

Celestial Coordinates

Apparent

15h 29m 47s
-19° 38’ 02”
10h 17m 01s
01h 46m 48s

J2000

15h 28m 20s
-19° 32’ 54”

Additional Information

Libra
11.64

Rise and Set Times

Today's rise, transit and set times of Asteroid 349 Dembowska (1892 T) from Greenwich, UK (all times relative to the local timezone Europe/London):

Azimuth: 109.6°
Max altitude: 18.9°
Azimuth: 250.4°
  • 349 Dembowska is below the horizon from Greenwich, UK.
  • Given its current magnitude, 349 Dembowska is visible with the help of a telescope having an aperture of 4 inches (100mm) or more.
  • 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.

Distance from Earth

The distance of Asteroid 349 Dembowska (1892 T) from Earth is currently 452,042,261.0 kilometers, equivalent to 3.0217158766 Astronomical Units. Light takes 25m 7.851s to travel from Asteroid 349 Dembowska (1892 T) and arrive to us.

452,042,261.0
3.0217158766
25m 7.851s

The following chart shows the distance of Asteroid 349 Dembowska (1892 T) 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 349 Dembowska (1892 T) 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 349 Dembowska 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 349 Dembowska (1892 T) to Earth happens on Wed Nov 24 2077 at a distance of 1.740168 Astronomical Units, or 260,325,416 kilometers:

Wed Nov 24 2077
260,325,416
1.740168

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 349 Dembowska (1892 T), 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 349 Dembowska (1892 T) as a function of time

Orbital Elements

The following table lists the orbital elements of Asteroid 349 Dembowska (1892 T) at epoch 24 February 2023 00:00 UTC (JD: 2460000.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.08945363
Orbit inclination i 8.25090113°
Perihelion distance q 2.66158113 AU
398,166,870 km
Aphelion distance Q 3.18453765 AU
476,400,053 km
Semi-major axis a 2.92305939 AU
437,283,461 km
Orbital period period 4.9976 years
1,825.3867 days
Date of perihelion transit Tp 2022-Apr-16 19:25:36
2,459,686.3094 JD
Next perihelion transit 2027-Apr-16 04:42
2,461,511.6962 JD
Argument of perihelion peri 344.31385486018°
Longitude of the ascending node node 32.192410931239°
Mean anomaly M 61.964184619407°
Mean motion n 0.19721848°/day

Orbit Visualization

Orbit Diagram of Asteroid 349 Dembowska (1892 T)
View Asteroid 349 Dembowska (1892 T) in the 3D Solar System Simulator

15 Days Ephemeris

The following table lists the ephemerides of Asteroid 349 Dembowska (1892 T) 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 Feb 05 15h 24m 02s -19° 04’ 26” 11.72 Libra
2025 Feb 06 15h 24m 50s -19° 08’ 59” 11.71 Libra
2025 Feb 07 15h 25m 37s -19° 13’ 28” 11.70 Libra
2025 Feb 08 15h 26m 23s -19° 17’ 55” 11.70 Libra
2025 Feb 09 15h 27m 08s -19° 22’ 18” 11.69 Libra
2025 Feb 10 15h 27m 52s -19° 26’ 38” 11.67 Libra
2025 Feb 11 15h 28m 36s -19° 30’ 56” 11.66 Libra
2025 Feb 12 15h 29m 18s -19° 35’ 11” 11.65 Libra
2025 Feb 13 15h 30m 00s -19° 39’ 23” 11.64 Libra
2025 Feb 14 15h 30m 40s -19° 43’ 32” 11.63 Libra
2025 Feb 15 15h 31m 20s -19° 47’ 37” 11.62 Libra
2025 Feb 16 15h 31m 59s -19° 51’ 40” 11.61 Libra
2025 Feb 17 15h 32m 37s -19° 55’ 40” 11.60 Libra
2025 Feb 18 15h 33m 13s -19° 59’ 37” 11.59 Libra

Additional Resources