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13778 (1998 US7)
Classification: Main-belt Asteroid          SPK-ID: 2013778
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08836476671821976 4.014e-08  
a 2.617970540342843 1.3198e-08 au
q 2.386634184270276 1.0582e-07 au
i 14.51152015776158 4.662e-06 deg
node 211.2686751524458 1.454e-05 deg
peri 18.1216135088563 2.9245e-05 deg
M 206.9523424251028 2.8624e-05 deg
tp 2459658.263462973892
(2022-Mar-19.76346297)
0.0001256 TDB
period 1547.196804072094
4.24
1.17e-05
3.203e-08
d
yr
n .2326788673894038 1.7595e-09 deg/d
Q 2.84930689641541 1.4364e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1428  
   data-arc span      10408 days (28.50 yr)  
   first obs. used      1992-05-02  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50078  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:44:14  

Additional Information
 Earth MOID = 1.3815 au 
 Jupiter MOID = 2.1305 au 
 T_jup = 3.356 
[ 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 14.2   n/a MPO502273  
diameter diameter 3.688 km 0.075 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.326   0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13778 (1998 US7)          Discovered 1998-Oct-22 by Korlevic, K. at Visnjan
Reference: 20000222/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 US7 = 1992 JT 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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