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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1301078738940812 3.5389e-08  
a 2.268118039402165 8.1881e-09 au
q 1.973018023554737 7.9308e-08 au
i 8.833552651255266 3.7019e-06 deg
node 111.9608916308087 2.3988e-05 deg
peri 146.3423315813877 2.7874e-05 deg
M 84.82184826336839 1.3371e-05 deg
tp 2458306.530592743620
(2018-Jul-07.03059274)
4.6635e-05 TDB
period 1247.66187932739
3.42
6.7563e-06
1.85e-08
d
yr
n .2885397125333946 1.5625e-09 deg/d
Q 2.563218055249592 9.2535e-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 = .963437 au 
 Jupiter MOID = 2.51228 au 
 T_jup = 3.588 
[ show covariance matrix ]

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-January); 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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