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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1810376608027481 6.2637e-08  
a 2.277389631901641 8.4059e-09 au
q 1.865096340205736 1.3827e-07 au
i 6.415187148386521 4.3852e-06 deg
node 178.8635680339584 3.8723e-05 deg
peri 195.028983061391 4.0248e-05 deg
M 86.20585425779981 1.1537e-05 deg
tp 2458699.900194899923
(2019-Aug-04.40019490)
3.9495e-05 TDB
period 1255.319963681427
3.44
6.9501e-06
1.903e-08
d
yr
n .2867794748872171 1.5878e-09 deg/d
Q 2.689682923597545 9.9277e-09 au
  Orbit Determination Parameters
   # obs. used (total)      639  
   data-arc span      7832 days (21.44 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51459  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:13:50  

Additional Information
 Earth MOID = .866231 au 
 Jupiter MOID = 2.77342 au 
 T_jup = 3.578 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457248.5 (2015-Aug-14.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1819592259427213 6.2877e-08  
q 1.862732849954943 1.3895e-07 au
tp 2457443.275122929796
(2016-Feb-24.77512293)
3.6663e-05 TDB
node 178.9187751797816 3.8673e-05 deg
peri 194.6456539276987 4.0172e-05 deg
i 6.419510040127973 4.3886e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      639  
   data-arc span      7832 days (21.44 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51459  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:13:50  

Additional Information
 Jupiter MOID = 2.77342 au 
 T_jup = 3.578 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.953476315071567E-15 -8.730785814479356E-15 9.131431889404172E-13 2.86904667787367E-14 9.478600324441541E-14 -9.842016633195313E-15
q -8.730785814479356E-15 1.930805522164223E-14 -2.010358595885587E-12 -6.239529002609392E-14 -2.094000871124696E-13 2.183147537243803E-14
tp 9.131431889404172E-13 -2.010358595885587E-12 1.344173110111098E-9 5.313044289925568E-12 4.022470345027268E-10 -5.242732386728335E-12
node 2.86904667787367E-14 -6.239529002609392E-14 5.313044289925568E-12 1.495569249700968E-9 -1.485340360978765E-9 7.815476920956205E-11
peri 9.478600324441541E-14 -2.094000871124696E-13 4.022470345027268E-10 -1.485340360978765E-9 1.613803663509917E-9 -7.899619623445902E-11
i -9.842016633195313E-15 2.183147537243803E-14 -5.242732386728335E-12 7.815476920956205E-11 -7.899619623445902E-11 1.925999326031061E-11

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 16.2   n/a MPO449611  
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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