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49012 (1998 QR72)
Classification: Main-belt Asteroid          SPK-ID: 2049012
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1124837294850979 2.9183e-08  
a 2.350685787131634 6.9408e-09 au
q 2.086271882947455 6.8947e-08 au
i 6.072162649232053 4.468e-06 deg
node 241.3943538189636 3.2754e-05 deg
peri 45.14257598240675 3.9206e-05 deg
M 56.53282828574856 2.1033e-05 deg
tp 2458793.777136729617
(2019-Nov-06.27713673)
7.6779e-05 TDB
period 1316.407351869541
3.60
5.8304e-06
1.596e-08
d
yr
n .273471581185515 1.2112e-09 deg/d
Q 2.615099691315813 7.7215e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1716  
   data-arc span      8105 days (22.19 yr)  
   first obs. used      1998-08-19  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51181  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:34:43  

Additional Information
 Earth MOID = 1.07508 au 
 Jupiter MOID = 2.50698 au 
 T_jup = 3.542 
[ 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 14.6   n/a MPO436126  

49012 (1998 QR72)          Discovered 1998-Aug-24 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QR72 = 2000 AR110 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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