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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08809178791889208 3.4881e-08  
a 2.618223108409497 1.2001e-08 au
q 2.387579153619146 9.4884e-08 au
i 14.51081033721828 3.8723e-06 deg
node 211.2521645871772 1.4486e-05 deg
peri 18.13272053168008 2.9138e-05 deg
M 299.0617651640932 2.836e-05 deg
tp 2459658.436351308240
(2022-Mar-19.93635131)
0.00012279 TDB
period 1547.420707621208
4.24
1.0639e-05
2.913e-08
d
yr
n .2326451999943923 1.5996e-09 deg/d
Q 2.848867063199849 1.3058e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1689  
   data-arc span      10591 days (29.00 yr)  
   first obs. used      1992-05-02  
   last obs. used      2021-05-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47661  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:07:54  

Additional Information
 Earth MOID = 1.38297 au 
 Jupiter MOID = 2.12862 au 
 T_jup = 3.355 
[ 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 14.23   n/a MPCxxxxx  
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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