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135991 Danarmstrong (2002 UY35)
Classification: Main-belt Asteroid          SPK-ID: 2135991
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1790479976581006 6.5007e-08  
a 2.625947577462111 1.1956e-08 au
q 2.15577692176238 1.6772e-07 au
i 11.77248995308444 4.2613e-06 deg
node 309.2353420562931 2.17e-05 deg
peri 51.90666524581066 2.4917e-05 deg
M 121.1067980695765 1.0912e-05 deg
tp 2458677.630239178723
(2019-Jul-13.13023918)
4.6767e-05 TDB
period 1554.273722830314
4.26
1.0615e-05
2.906e-08
d
yr
n .2316194340237858 1.5818e-09 deg/d
Q 3.096118233161842 1.4097e-08 au
  Orbit Determination Parameters
   # obs. used (total)      780  
   data-arc span      7670 days (21.00 yr)  
   first obs. used      2000-03-06  
   last obs. used      2021-03-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49023  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:15:28  

Additional Information
 Earth MOID = 1.17095 au 
 Jupiter MOID = 2.41089 au 
 T_jup = 3.350 
[ 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 15.38   n/a MPCxxxxx  

135991 Danarmstrong           Discovered 2002 Oct. 31 by D. S. Dixon at Las Cruces.
Daniel Armstrong (b. 1944) received a BS in Mechanical Engineering from the University of Wisconsin in 1967. In the early 1980's, before CCD sensors were available to amateurs, Dan began a nearly decade-long visual observation program directed at minor planet paths and occultation events.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2016-11-14Last Updated: 2016-11-20
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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