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46542 (1987 AD)
Classification: Main-belt Asteroid          SPK-ID: 2046542
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2077514974436562 5.1187e-08  
a 2.576085351168686 1.9031e-08 au
q 2.040899761920724 1.3047e-07 au
i 29.78113536388778 1.0585e-05 deg
node 281.1296115207612 1.1743e-05 deg
peri 139.9076524200761 3.0352e-05 deg
M 328.9052692639098 2.7394e-05 deg
tp 2458730.943696873076
(2019-Sep-04.44369687)
0.00011551 TDB
period 1510.215067397361
4.13
1.6735e-05
4.582e-08
d
yr
n .2383766443413972 2.6415e-09 deg/d
Q 3.111270940416647 2.2984e-08 au
  Orbit Determination Parameters
   # obs. used (total)      692  
   data-arc span      15888 days (43.50 yr)  
   first obs. used      1976-05-01  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43951  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:27:33  

Additional Information
 Earth MOID = 1.10526 au 
 Jupiter MOID = 2.25517 au 
 T_jup = 3.215 
[ 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 14.3   n/a MPO449295  
diameter diameter 6.443 km 0.086 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.089   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46542 (1987 AD)          Discovered 1987-Jan-04 by Palomar at Palomar
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1987 AD = 1998 WW1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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