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JPL Small-Body Database Browser
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49849 (1999 XK94)
Classification: Main-belt Asteroid          SPK-ID: 2049849
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1815131308947902 4.8184e-08  
a 2.460580456343965 1.6757e-08 au
q 2.013952793894441 1.1588e-07 au
i 14.3156373780572 5.4237e-06 deg
node 100.7507441070796 2.0836e-05 deg
peri 228.067162138197 3.0281e-05 deg
M 237.644361336387 2.9053e-05 deg
tp 2459479.655270644358
(2021-Sep-22.15527064)
0.00011686 TDB
period 1409.791157285397
3.86
1.4402e-05
3.943e-08
d
yr
n .2553569712362169 2.6086e-09 deg/d
Q 2.90720811879349 1.9799e-08 au
  Orbit Determination Parameters
   # obs. used (total)      992  
   data-arc span      7723 days (21.14 yr)  
   first obs. used      1998-11-14  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54404  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 07:47:10  

Additional Information
 Earth MOID = 1.02869 au 
 Jupiter MOID = 2.45076 au 
 T_jup = 3.425 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456325.5 (2013-Feb-02.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1819427231364839 4.8165e-08  
q 2.013165512165078 1.1605e-07 au
tp 2456656.546450695661
(2013-Dec-30.04645070)
0.00010013 TDB
node 100.8790908329243 2.0802e-05 deg
peri 227.4137280730885 3.0199e-05 deg
i 14.32844407291918 5.4275e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      992  
   data-arc span      7723 days (21.14 yr)  
   first obs. used      1998-11-14  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54404  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 07:47:10  

Additional Information
 Jupiter MOID = 2.45076 au 
 T_jup = 3.425 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.319888392523055E-15 -5.552550044177611E-15 1.54085205308211E-12 -1.841490537271946E-14 2.981709183333086E-13 8.286737533176501E-15
q -5.552550044177611E-15 1.346731827309859E-14 -3.138703165728469E-12 4.055876752243008E-14 -6.019092356639689E-13 -1.864511955360863E-14
tp 1.54085205308211E-12 -3.138703165728469E-12 1.002641869023898E-8 -4.481764109912979E-11 2.219132098754488E-9 7.845457816298239E-12
node -1.841490537271946E-14 4.055876752243008E-14 -4.481764109912979E-11 4.327404213250156E-10 -4.278194330384057E-10 -1.033552053573073E-11
peri 2.981709183333086E-13 -6.019092356639689E-13 2.219132098754488E-9 -4.278194330384057E-10 9.119814436470339E-10 1.136324537002883E-11
i 8.286737533176501E-15 -1.864511955360863E-14 7.845457816298239E-12 -1.033552053573073E-11 1.136324537002883E-11 2.945747459230693E-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 14.3   n/a MPO417162  
diameter diameter 10.207 km 2.520 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.039   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

49849 (1999 XK94)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XK94 = 1998 VZ44 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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