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3476 Dongguan (1978 UF2)
Classification: Main-belt Asteroid          SPK-ID: 2003476
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1948932136011109 1.5202e-08  
a 3.159044288451371 1.6792e-08 au
q 2.543367995166848 5.1745e-08 au
i 21.60576851121242 8.6879e-07 deg
node 43.81521358150871 1.3784e-06 deg
peri 25.46841603317203 4.9179e-06 deg
M 153.955644509079 6.6307e-06 deg
tp 2458323.448462708896
(2018-Jul-23.94846271)
3.6171e-05 TDB
period 2050.841035621645
5.61
1.6352e-05
4.477e-08
d
yr
n .1755377397599604 1.3996e-09 deg/d
Q 3.774720581735894 2.0065e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2280  
   data-arc span      16332 days (44.71 yr)  
   first obs. used      1976-05-31  
   last obs. used      2021-02-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38671  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:10:17  

Additional Information
 Earth MOID = 1.56923 au 
 Jupiter MOID = 1.69319 au 
 T_jup = 3.068 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.86   n/a E2021B10  
diameter diameter 31.53 km 2.4 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
geometric albedo albedo 0.0309   0.005 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2

3476 Dongguan (1978 UF2)          Discovered 1978-Oct-28 by Purple Mountain Observatory at Nanking
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1978 UF2 = 1984 WH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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