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4084 Hollis (1985 GM)
Classification: Main-belt Asteroid          SPK-ID: 2004084
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 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01361594253522855 1.467e-08  
a 2.911318390301747 1.118e-08 au
q 2.871678046397644 4.5622e-08 au
i 3.21241791587885 1.0508e-06 deg
node 87.78089671545267 3.4979e-06 deg
peri 213.5436375141867 8.6078e-05 deg
M 336.493962476723 8.418e-05 deg
tp 2459318.970414191744
(2021-Apr-14.47041419)
0.00042408 TDB
period 1814.399771411668
4.97
1.0451e-05
2.861e-08
d
yr
n .1984127234098509 1.1429e-09 deg/d
Q 2.950958734205849 1.1332e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3096  
   data-arc span      23905 days (65.45 yr)  
   first obs. used      1955-04-21  
   last obs. used      2020-10-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44084  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:55:23  

Additional Information
 Earth MOID = 1.85444 au 
 Jupiter MOID = 2.05491 au 
 T_jup = 3.281 
[ 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 12.26   n/a E2020-QM5  
diameter diameter 10.295 km 0.214 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.453823 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.219   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4084 Hollis (1985 GM)          Discovered 1985-Apr-14 by Bowell, E. at Flagstaff
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1985 GM = 1957 UE = 1964 BH = 1972 TB7 = 1989 AJ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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