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101042 (1998 QN99)
Classification: Main-belt Asteroid          SPK-ID: 2101042
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1892736192800949 3.2393e-08  
a 2.240873264909256 7.811e-09 au
q 1.816735071711878 7.1193e-08 au
i 4.438615611055739 3.6944e-06 deg
node 144.5197802164596 4.2048e-05 deg
peri 157.8527244541545 4.2994e-05 deg
M 205.1006428774137 9.0542e-06 deg
tp 2459527.695244674274
(2021-Nov-09.19524467)
3.1541e-05 TDB
period 1225.249036589222
3.35
6.4062e-06
1.754e-08
d
yr
n .2938178192754571 1.5362e-09 deg/d
Q 2.665011458106633 9.2894e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1153  
   data-arc span      7935 days (21.72 yr)  
   first obs. used      1998-08-23  
   last obs. used      2020-05-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53213  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:02:46  

Additional Information
 Earth MOID = .802373 au 
 Jupiter MOID = 2.56679 au 
 T_jup = 3.607 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457045.5 (2015-Jan-23.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1898107126902334 3.239e-08  
q 1.815320126814453 7.1227e-08 au
tp 2457077.531038222459
(2015-Feb-24.03103822)
3.0108e-05 TDB
node 144.5577927373193 4.2034e-05 deg
peri 157.8869751098765 4.2975e-05 deg
i 4.439352377308489 3.6956e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1153  
   data-arc span      7935 days (21.72 yr)  
   first obs. used      1998-08-23  
   last obs. used      2020-05-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53213  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:02:46  

Additional Information
 Jupiter MOID = 2.56679 au 
 T_jup = 3.607 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.04912745736573E-15 -2.298614462456983E-15 1.353165972629058E-13 -1.179984975407787E-14 4.717408455636159E-14 -4.095077767800975E-16
q -2.298614462456983E-15 5.073312333600737E-15 -3.240533839687244E-13 2.541043484953532E-14 -1.117582498084088E-13 8.923336736152959E-16
tp 1.353165972629058E-13 -3.240533839687244E-13 9.064687526273349E-10 -5.447067252177565E-12 2.784761751482598E-10 -2.343419360713653E-13
node -1.179984975407787E-14 2.541043484953532E-14 -5.447067252177565E-12 1.766841114377947E-9 -1.762530144025143E-9 5.593557963018084E-12
peri 4.717408455636159E-14 -1.117582498084088E-13 2.784761751482598E-10 -1.762530144025143E-9 1.846844269115564E-9 -5.649214706903674E-12
i -4.095077767800975E-16 8.923336736152959E-16 -2.343419360713653E-13 5.593557963018084E-12 -5.649214706903674E-12 1.365777031291057E-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 15.8   n/a MPO449612  

101042 (1998 QN99)          Discovered 1998-Aug-26 by Elst, E. W. at La Silla
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 QN99 = 2001 KY12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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