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70684 (1999 UD9)
Classification: Main-belt Asteroid          SPK-ID: 2070684
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06699908505299539 3.4105e-08  
a 2.718920900461907 1.371e-08 au
q 2.536755687799493 9.5856e-08 au
i 7.815939624699687 5.3372e-06 deg
node 45.72704379597517 2.8029e-05 deg
peri 264.916064874508 4.9487e-05 deg
M 28.03485266927244 4.1145e-05 deg
tp 2459268.976840576778
(2021-Feb-23.47684058)
0.00018703 TDB
period 1637.545163298748
4.48
1.2386e-05
3.391e-08
d
yr
n .2198412648813905 1.6628e-09 deg/d
Q 2.90108611312432 1.4628e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1165  
   data-arc span      7921 days (21.69 yr)  
   first obs. used      1999-10-10  
   last obs. used      2021-06-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51787  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 22:44:42  

Additional Information
 Earth MOID = 1.53699 au 
 Jupiter MOID = 2.26276 au 
 T_jup = 3.343 
[ 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 14.57   n/a E2021B10  
diameter diameter 6.061 km 0.184 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.069   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

70684 (1999 UD9)          Discovered 1999-Oct-29 by CSS at Catalina
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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