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15981 (1998 UP6)
Classification: Main-belt Asteroid          SPK-ID: 2015981
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 .2513259436524546 3.7785e-08  
a 2.606067417848955 9.5768e-09 au
q 1.951095064836151 9.6419e-08 au
i 17.55597207146264 5.0593e-06 deg
node 23.60943789543996 1.284e-05 deg
peri 299.8119118819082 1.7298e-05 deg
M 107.6406141514586 1.3804e-05 deg
tp 2458541.036979918510
(2019-Feb-26.53697992)
5.7786e-05 TDB
period 1536.656851442677
4.21
8.4704e-06
2.319e-08
d
yr
n .2342748152666726 1.2914e-09 deg/d
Q 3.26103977086176 1.1984e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1854  
   data-arc span      24493 days (67.06 yr)  
   first obs. used      1953-01-10  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48336  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:32:18  

Additional Information
 Earth MOID = 1.00241 au 
 Jupiter MOID = 2.33831 au 
 T_jup = 3.303 
[ 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 13.3   n/a MPO400164  
diameter diameter 7.520 km 0.075 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.125   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15981 (1998 UP6)          Discovered 1998-Oct-18 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 UP6 = 1981 SF5 = 1981 US = 1988 FM3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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