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78441 (2002 RQ13)
Classification: Main-belt Asteroid          SPK-ID: 2078441
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1950345141568288 4.2411e-08  
a 2.36478375913378 8.435e-09 au
q 1.903569307585164 1.0188e-07 au
i 2.539643638743953 4.3846e-06 deg
node 164.916496437976 7.9167e-05 deg
peri 146.2906623610585 7.9972e-05 deg
M 37.69566234890015 8.9079e-06 deg
tp 2459061.416869939184
(2020-Jul-30.91686994)
3.31e-05 TDB
period 1328.267596373852
3.64
7.1067e-06
1.946e-08
d
yr
n .2710297239673646 1.4501e-09 deg/d
Q 2.825998210682397 1.008e-08 au
  Orbit Determination Parameters
   # obs. used (total)      625  
   data-arc span      9171 days (25.11 yr)  
   first obs. used      1995-10-18  
   last obs. used      2020-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52511  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 07:15:07  

Additional Information
 Earth MOID = .887956 au 
 Jupiter MOID = 2.44665 au 
 T_jup = 3.521 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.76   n/a E2021B10  

78441 (2002 RQ13)          Discovered 2002-Sep-04 by LONEOS at Anderson Mesa
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1903-Jan-01 03:22 < 00:01 Amphi 0.0105181805365042 0.010516287426608 0.010520088859598 4.87941844687201 4.87941833486006 2416115.640586214 0.56312759511111 726.135761786318 45.715851737036 -83.4237691274653 34179.5572383539 T 25 CATAB v2.0f-lin.ifort 2021-Feb-24 07:15:08 2021-Feb-24 07:15

Alternate Designations
 2002 RQ13 = 1995 UW54 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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