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49836 (1999 XD85)
Classification: Main-belt Asteroid          SPK-ID: 2049836
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1109977671798442 3.2854e-08  
a 2.378246288606455 1.0119e-08 au
q 2.114266260767387 7.54e-08 au
i 3.349015120948213 3.5244e-06 deg
node 120.0752004856131 8.3372e-05 deg
peri 357.3888268458365 8.7282e-05 deg
M 193.2369891522434 2.5701e-05 deg
tp 2459621.055880148882
(2022-Feb-10.55588015)
9.6836e-05 TDB
period 1339.626309922808
3.67
8.5494e-06
2.341e-08
d
yr
n .2687316584732826 1.715e-09 deg/d
Q 2.642226316445523 1.1242e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1025  
   data-arc span      9169 days (25.10 yr)  
   first obs. used      1994-07-11  
   last obs. used      2019-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5526  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:35:45  

Additional Information
 Earth MOID = 1.13047 au 
 Jupiter MOID = 2.42319 au 
 T_jup = 3.529 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456825.5 (2014-Jun-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .111328060560057 3.2719e-08  
q 2.112655527104443 7.518e-08 au
tp 2456941.110776746716
(2014-Oct-10.61077675)
9.211e-05 TDB
node 120.1123715656146 8.3481e-05 deg
peri 357.0492079181652 8.737e-05 deg
i 3.347056212332876 3.5208e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1025  
   data-arc span      9169 days (25.10 yr)  
   first obs. used      1994-07-11  
   last obs. used      2019-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5526  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:35:45  

Additional Information
 Jupiter MOID = 2.42319 au 
 T_jup = 3.529 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.070523090173772E-15 -2.44493988644083E-15 7.84939805696822E-13 3.302071609517009E-15 1.909861404847826E-13 -2.702633612850034E-16
q -2.44493988644083E-15 5.651992380121295E-15 -1.719345027035088E-12 -7.593503700037596E-15 -4.177955749400208E-13 6.680663308302741E-16
tp 7.84939805696822E-13 -1.719345027035088E-12 8.484317697402051E-9 -3.808287188062142E-12 2.401160506952854E-9 -2.032940933721148E-12
node 3.302071609517009E-15 -7.593503700037596E-15 -3.808287188062142E-12 6.96908440264096E-9 -6.958075203850968E-9 6.963872315819471E-11
peri 1.909861404847826E-13 -4.177955749400208E-13 2.401160506952854E-9 -6.958075203850968E-9 7.633498569555161E-9 -7.010223105755535E-11
i -2.702633612850034E-16 6.680663308302741E-16 -2.032940933721148E-12 6.963872315819471E-11 -7.010223105755535E-11 1.239638157384464E-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 15.4   n/a MPO337656  

49836 (1999 XD85)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XD85 = 1994 NP6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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