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3579 Rockholt (1977 YA)
Classification: Main-belt Asteroid          SPK-ID: 2003579
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3556033870220135 2.124e-08  
a 2.736258466687989 1.1199e-08 au
q 1.763235688166079 5.8364e-08 au
i 31.04684838012401 1.1555e-06 deg
node 14.4407754884269 2.7132e-06 deg
peri 108.9363372915502 4.3474e-06 deg
M 169.6673254548718 5.2704e-06 deg
tp 2458421.334315094846
(2018-Oct-29.83431509)
2.2087e-05 TDB
period 1653.233147949061
4.53
1.015e-05
2.779e-08
d
yr
n .2177551305734478 1.3368e-09 deg/d
Q 3.709281245209898 1.5181e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1209  
   data-arc span      15520 days (42.49 yr)  
   first obs. used      1977-12-18  
   last obs. used      2020-06-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46042  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:17:13  

Additional Information
 Earth MOID = .954702 au 
 Jupiter MOID = 1.95686 au 
 T_jup = 3.063 
[ 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 13.79   n/a E2021B10  
diameter diameter 6.908 km 0.090 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.120   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B B   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

3579 Rockholt           Discovered 1977 Dec. 18 by M. Lovas at Piszkesteto.
The lifelong affection of Ronald Rockholt Sr. (b. 1928) for the stars led him to pursuits in aviation, rocketry, telescope making and astronomy. Most importantly, he is recognized for inspiring two generations of rural California students to love science through his innovative, hands-on teaching. The name was suggested by K. Beatty.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20001013/MPCPages.arcLast Updated: 2013-03-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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