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100958 (1998 QD12)
Classification: Main-belt Asteroid          SPK-ID: 2100958
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1811670566468413 6.2608e-08  
a 2.277245437042029 8.4156e-09 au
q 1.864683583950675 1.3819e-07 au
i 6.415870831033366 4.37e-06 deg
node 178.8589888115394 3.859e-05 deg
peri 195.0263444361382 4.0108e-05 deg
M 143.5598438263491 1.1666e-05 deg
tp 2458699.954381529976
(2019-Aug-04.45438153)
3.9418e-05 TDB
period 1255.200743093421
3.44
6.9579e-06
1.905e-08
d
yr
n .2868067135721942 1.5898e-09 deg/d
Q 2.689807290133383 9.9402e-09 au
  Orbit Determination Parameters
   # obs. used (total)      647  
   data-arc span      8185 days (22.41 yr)  
   first obs. used      1998-08-17  
   last obs. used      2021-01-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51344  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:33:02  

Additional Information
 Earth MOID = .86435 au 
 Jupiter MOID = 2.77441 au 
 T_jup = 3.578 
[ 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 16.32   n/a E2021B55  
diameter diameter 2.153 km 0.426 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.138   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

100958 (1998 QD12)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 QD12 = 2000 DA32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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