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103112 (1999 XA178)
Classification: Main-belt Asteroid          SPK-ID: 2103112
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1184973476240053 5.1393e-08  
a 2.748701668866501 2.2565e-08 au
q 2.422987811696144 1.3085e-07 au
i 7.581280636576876 4.9432e-06 deg
node 309.1869030564476 3.8001e-05 deg
peri 164.8355143349863 4.6383e-05 deg
M 212.1220735329416 3.1318e-05 deg
tp 2459884.239527608808
(2022-Oct-31.73952761)
0.00015039 TDB
period 1664.523136209939
4.56
2.0497e-05
5.612e-08
d
yr
n .2162781592929417 2.6632e-09 deg/d
Q 3.074415526036859 2.5239e-08 au
  Orbit Determination Parameters
   # obs. used (total)      491  
   data-arc span      7580 days (20.75 yr)  
   first obs. used      1999-12-10  
   last obs. used      2020-09-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56073  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:50:38  

Additional Information
 Earth MOID = 1.44014 au 
 Jupiter MOID = 2.01692 au 
 T_jup = 3.324 
[ 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 15.4   n/a MPO253948  
diameter diameter 5.116 km 0.194 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

103112 (1999 XA178)          Discovered 1999-Dec-10 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 XA178 = 2002 NG52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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