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6901 Roybishop (1989 PA)
Classification: Inner Main-belt Asteroid          SPK-ID: 2006901
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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1116510416325321 9.9597e-09  
a 1.942563366602853 5.463e-09 au
q 1.725674143284446 2.2264e-08 au
i 23.15073795520608 1.0123e-06 deg
node 285.3006715324588 1.0447e-06 deg
peri 124.8878270456046 6.6981e-06 deg
M 124.4232405553832 6.9387e-06 deg
tp 2458858.709312289005
(2020-Jan-10.20931229)
1.8674e-05 TDB
period 988.9201328202714
2.71
4.1717e-06
1.142e-08
d
yr
n .3640334421884272 1.5356e-09 deg/d
Q 2.159452589921259 6.073e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2783  
   data-arc span      16094 days (44.06 yr)  
   first obs. used      1977-01-20  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .29682  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 19:12:50  

Additional Information
 Earth MOID = .793892 au 
 Jupiter MOID = 3.12663 au 
 T_jup = 3.795 
[ 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 13.74   n/a E2021B10  
diameter diameter 5.050 km 0.097 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 4.766 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D. (2009) Minor Planet Bull. 36, 7-13.]
[Warner, B.D.; Coley, D. (2012) Minor Planet Bull. 39, 83.]
[Warner, B.D. (2015) Minor Planet Bull. 42, 183-186.]
[Stephens, R.D.; Warner, B.D. (2020) Minor Planet Bull. 47, 50-60.]
geometric albedo albedo 0.191   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

6901 Roybishop (1989 PA)          Discovered 1989-Aug-02 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1989 PA = 1977 BL 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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