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46559 (1991 PC1)
Classification: Inner Main-belt Asteroid          SPK-ID: 2046559
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06692917216793297 5.3811e-08  
a 1.938436288768211 5.6719e-09 au
q 1.808698352660674 1.0504e-07 au
i 18.5222816223467 6.7435e-06 deg
node 345.7449740290073 1.0084e-05 deg
peri 327.4677166058163 3.4889e-05 deg
M 254.9592381295166 3.3641e-05 deg
tp 2459288.127950286224
(2021-Mar-14.62795029)
9.207e-05 TDB
period 985.770288211679
2.70
4.3266e-06
1.185e-08
d
yr
n .3651966429756052 1.6029e-09 deg/d
Q 2.068174224875747 6.0515e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1270  
   data-arc span      23778 days (65.10 yr)  
   first obs. used      1955-03-23  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48028  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:33:50  

Additional Information
 Earth MOID = .811116 au 
 Jupiter MOID = 3.128 au 
 T_jup = 3.839 
[ 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 MPO452807  
diameter diameter 1.436 km 0.216 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.168 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Warner, B.D (2011) Minor Planet Bull. 38, 25-31.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.856   0.151 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46559 (1991 PC1)          Discovered 1991-Aug-15 by Helin, E. F. at Palomar
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 PC1 = 2001 CM42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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