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213815 (2003 QB20)
Classification: Main-belt Asteroid          SPK-ID: 2213815
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1979531715241967 4.2797e-08  
a 2.265508461552461 7.0223e-09 au
q 1.817043876473248 9.7846e-08 au
i 7.291235788303513 4.4457e-06 deg
node 132.5781275853584 2.607e-05 deg
peri 236.6518204244633 2.7842e-05 deg
M 66.34596281919522 8.7416e-06 deg
tp 2459166.959692037825
(2020-Nov-13.45969204)
3.0285e-05 TDB
period 1245.509257158222
3.41
5.791e-06
1.585e-08
d
yr
n .2890383976923486 1.3439e-09 deg/d
Q 2.713973046631674 8.4124e-09 au
  Orbit Determination Parameters
   # obs. used (total)      833  
   data-arc span      7941 days (21.74 yr)  
   first obs. used      1999-05-17  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50719  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:44:13  

Additional Information
 Earth MOID = .826547 au 
 Jupiter MOID = 2.76523 au 
 T_jup = 3.580 
[ 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 16.25   n/a MPCxxxxx  
diameter diameter 1.508 km 0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.309   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

213815 (2003 QB20)          Discovered 2003-Aug-22 by NEAT at Palomar
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

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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
1902-Sep-20 11:28 00:03 Amphi 0.0469166541248344 0.0469078595679274 0.0469254543871891 4.3253986431669 4.32539861483864 2416012.977929704 3.39261120740623 928.15674572438 34.3996348156234 61.879234835407 179901.688458078 T 22 CATAB v2.0f-lin.ifort 2021-Apr-13 23:44:15 2021-Apr-13 23:44
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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