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2790 Needham (1965 UU1)
Classification: Main-belt Asteroid          SPK-ID: 2002790
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1792751338667994 1.6109e-08  
a 2.654930522732889 1.2277e-08 au
q 2.178967497862898 4.7334e-08 au
i 14.6173699878282 1.3239e-06 deg
node 50.73541987760778 3.1168e-06 deg
peri 358.9165732572131 7.1053e-06 deg
M 269.4086819144084 1.0006e-05 deg
tp 2459598.114529058270
(2022-Jan-18.61452906)
4.5386e-05 TDB
period 1580.076694830026
4.33
1.096e-05
3.001e-08
d
yr
n .227837041820762 1.5804e-09 deg/d
Q 3.130893547602879 1.4478e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1855  
   data-arc span      20069 days (54.95 yr)  
   first obs. used      1965-10-19  
   last obs. used      2020-09-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41451  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 14:17:27  

Additional Information
 Earth MOID = 1.18868 au 
 Jupiter MOID = 2.26518 au 
 T_jup = 3.320 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.56   n/a E2021B10  
diameter diameter 7.914 km 0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.339   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2790 Needham (1965 UU1)          Discovered 1965-Oct-19 by Purple Mountain Observatory at Nanking
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1965 UU1 = 1978 UR2 = 1980 DR1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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