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19512 (1998 QU2)
Classification: Main-belt Asteroid          SPK-ID: 2019512
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2083871876058025 1.9223e-08  
a 2.567699549041822 9.0926e-09 au
q 2.032623861400309 4.9396e-08 au
i 15.57525121100664 3.9165e-07 deg
node 162.4571273239605 3.7057e-06 deg
peri 204.007947095774 6.9494e-06 deg
M 126.1721449025818 5.5941e-06 deg
tp 2458673.784960174708
(2019-Jul-09.28496017)
2.2421e-05 TDB
period 1502.846880216786
4.11
7.9827e-06
2.186e-08
d
yr
n .2395453620318725 1.2724e-09 deg/d
Q 3.102775236683335 1.0987e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1994  
   data-arc span      14033 days (38.42 yr)  
   first obs. used      1982-10-22  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47048  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:54:50  

Additional Information
 Earth MOID = 1.03631 au 
 Jupiter MOID = 2.36752 au 
 T_jup = 3.350 
[ 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 13.71   n/a MPCxxxxx  
diameter diameter 3.957 km 0.282 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.261   0.126 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

19512 (1998 QU2)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 QU2 = 1994 RB22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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