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49916 (1999 XV171)
Classification: Main-belt Asteroid          SPK-ID: 2049916
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1426142559163363 5.2259e-08  
a 2.679147224867291 1.6046e-08 au
q 2.297062636902524 1.4347e-07 au
i 13.84430584787126 4.9152e-06 deg
node 77.42096254922031 2.3663e-05 deg
peri 140.2884401931669 2.9832e-05 deg
M 135.7597834340215 1.8219e-05 deg
tp 2458396.465238990898
(2018-Oct-04.96523899)
7.9896e-05 TDB
period 1601.744702759911
4.39
1.439e-05
3.94e-08
d
yr
n .2247549184209547 2.0191e-09 deg/d
Q 3.061231812832057 1.8334e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1117  
   data-arc span      7525 days (20.60 yr)  
   first obs. used      1998-09-28  
   last obs. used      2019-05-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51049  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:41:38  

Additional Information
 Earth MOID = 1.30428 au 
 Jupiter MOID = 1.98067 au 
 T_jup = 3.321 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456585.5 (2013-Oct-20.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1413170155649892 5.2467e-08  
q 2.301256657875304 1.4392e-07 au
tp 2456794.142853039481
(2014-May-16.64285304)
7.9465e-05 TDB
node 77.44946109700709 2.3665e-05 deg
peri 140.5062753325123 2.9911e-05 deg
i 13.8418089573711 4.9145e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1117  
   data-arc span      7525 days (20.60 yr)  
   first obs. used      1998-09-28  
   last obs. used      2019-05-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51049  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:41:38  

Additional Information
 Jupiter MOID = 1.98067 au 
 T_jup = 3.321 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.752836690906266E-15 -7.517873875058241E-15 -8.691614749905445E-13 -3.230328464626236E-15 -1.244856201517511E-13 -3.864627156957781E-15
q -7.517873875058241E-15 2.071408353429692E-14 2.322382693239921E-12 6.393230385753047E-15 3.220685986533644E-13 1.050122155167571E-14
tp -8.691614749905445E-13 2.322382693239921E-12 6.314691444867761E-9 -1.077915659457246E-11 1.485846239410338E-9 6.628493691444508E-12
node -3.230328464626236E-15 6.393230385753047E-15 -1.077915659457246E-11 5.600370449035045E-10 -5.465681291696903E-10 -1.191500013934026E-11
peri -1.244856201517511E-13 3.220685986533644E-13 1.485846239410338E-9 -5.465681291696903E-10 8.94674084092832E-10 1.301825728069069E-11
i -3.864627156957781E-15 1.050122155167571E-14 6.628493691444508E-12 -1.191500013934026E-11 1.301825728069069E-11 2.415206860601693E-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 14.2   n/a MPO449321  

49916 (1999 XV171)          Discovered 1999-Dec-10 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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