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JPL Small-Body Database Browser
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49832 (1999 XA84)
Classification: Main-belt Asteroid          SPK-ID: 2049832
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1299246593935684 3.5373e-08  
a 2.268660241844949 8.2075e-09 au
q 1.973905332643513 7.9291e-08 au
i 8.833808549449813 3.702e-06 deg
node 111.957509396052 2.3983e-05 deg
peri 146.4461681007315 2.7883e-05 deg
M 200.1048688181653 1.3304e-05 deg
tp 2459554.851664572546
(2021-Dec-06.35166457)
4.5848e-05 TDB
period 1248.109293704302
3.42
6.7731e-06
1.854e-08
d
yr
n .2884362786303313 1.5652e-09 deg/d
Q 2.563415151046384 9.2738e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1620  
   data-arc span      7831 days (21.44 yr)  
   first obs. used      1998-06-29  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51462  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 04:24:14  

Additional Information
 Earth MOID = .964664 au 
 Jupiter MOID = 2.51242 au 
 T_jup = 3.587 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456762.5 (2014-Apr-15.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1298185921255094 3.5308e-08  
q 1.973895699697072 7.907e-08 au
tp 2457059.394279328521
(2015-Feb-05.89427933)
4.8731e-05 TDB
node 111.9950002542871 2.3991e-05 deg
peri 146.5149778978503 2.7914e-05 deg
i 8.832476319464439 3.7012e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1620  
   data-arc span      7831 days (21.44 yr)  
   first obs. used      1998-06-29  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51462  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 04:24:14  

Additional Information
 Jupiter MOID = 2.51242 au 
 T_jup = 3.587 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.246637695217627E-15 -2.780689180836868E-15 -3.20446743680375E-13 -8.556778673916896E-15 -1.039783074321219E-13 -2.35853077913832E-16
q -2.780689180836868E-15 6.252016549677489E-15 6.080379773289175E-13 1.933667629063351E-14 1.988834670528151E-13 6.426854561198316E-16
tp -3.20446743680375E-13 6.080379773289175E-13 2.374705304519023E-9 9.018577501036292E-12 7.06617276897345E-10 -1.157593221864401E-12
node -8.556778673916896E-15 1.933667629063351E-14 9.018577501036292E-12 5.755720931741723E-10 -5.659049631376215E-10 -1.539558895271627E-11
peri -1.039783074321219E-13 1.988834670528151E-13 7.06617276897345E-10 -5.659049631376215E-10 7.792138743007731E-10 1.486245136904913E-11
i -2.35853077913832E-16 6.426854561198316E-16 -1.157593221864401E-12 -1.539558895271627E-11 1.486245136904913E-11 1.369883003142007E-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 14.4   n/a MPO449320  
diameter diameter 3.180 km 0.819 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.520 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.365   0.231 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49832 (1999 XA84)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XA84 = 2001 KX45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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