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160644 (1999 XM11)
Classification: Main-belt Asteroid          SPK-ID: 2160644
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2992195311762166 3.0789e-08  
a 2.560545940020624 9.3952e-09 au
q 1.794380584292488 8.0855e-08 au
i 3.995292632567587 4.7306e-06 deg
node 303.1298996514889 5.2262e-05 deg
peri 94.63662378891456 5.3743e-05 deg
M 59.19058577796016 1.4527e-05 deg
tp 2458954.436372422509
(2020-Apr-14.93637242)
5.9318e-05 TDB
period 1496.570861119621
4.10
8.2369e-06
2.255e-08
d
yr
n .2405499193874958 1.324e-09 deg/d
Q 3.326711295748761 1.2206e-08 au
  Orbit Determination Parameters
   # obs. used (total)      934  
   data-arc span      7832 days (21.44 yr)  
   first obs. used      1999-10-05  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50753  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:02:12  

Additional Information
 Earth MOID = .806236 au 
 Jupiter MOID = 2.13643 au 
 T_jup = 3.368 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457194.5 (2015-Jun-21.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3005852496032688 3.1591e-08  
q 1.790305535746383 8.3552e-08 au
tp 2457453.449760157099
(2016-Mar-05.94976016)
5.1691e-05 TDB
node 303.6824636978601 5.2358e-05 deg
peri 93.38085035527025 5.3768e-05 deg
i 3.989460903680125 4.7373e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      934  
   data-arc span      7832 days (21.44 yr)  
   first obs. used      1999-10-05  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50753  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:02:12  

Additional Information
 Jupiter MOID = 2.13643 au 
 T_jup = 3.368 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.97995424137754E-16 -2.631019871686614E-15 -8.558369304993292E-13 2.216080997903614E-15 -1.937482492479754E-13 -1.903106486057223E-15
q -2.631019871686614E-15 6.981002435434564E-15 2.480985425839833E-12 -5.480806738827359E-15 5.610637833679744E-13 5.569321450681084E-15
tp -8.558369304993292E-13 2.480985425839833E-12 2.671966792960477E-9 -1.380969820609145E-11 6.441299003766265E-10 3.80310759522722E-12
node 2.216080997903614E-15 -5.480806738827359E-15 -1.380969820609145E-11 2.741370426179032E-9 -2.737871468666551E-9 1.060325734765938E-10
peri -1.937482492479754E-13 5.610637833679744E-13 6.441299003766265E-10 -2.737871468666551E-9 2.891016379565554E-9 -1.049650433232001E-10
i -1.903106486057223E-15 5.569321450681084E-15 3.80310759522722E-12 1.060325734765938E-10 -1.049650433232001E-10 2.244165295745E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.59   n/a MPCxxxxx  

160644 (1999 XM11)          Discovered 1999-Dec-05 by CSS at Catalina
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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