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4934 Rhoneranger (1985 JJ)
Classification: Main-belt Asteroid          SPK-ID: 2004934
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 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1110513759284867 3.2571e-08  
a 3.000308941424428 1.5789e-08 au
q 2.667120505268704 9.6772e-08 au
i 10.96230279506326 3.4013e-06 deg
node 187.5348824493109 1.7195e-05 deg
peri 152.567330461518 2.2008e-05 deg
M 208.6632635086735 1.5164e-05 deg
tp 2459998.474943871987
(2023-Feb-22.97494387)
8.309e-05 TDB
period 1898.223699375064
5.20
1.4984e-05
4.102e-08
d
yr
n .1896509879834077 1.4971e-09 deg/d
Q 3.333497377580152 1.7543e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2730  
   data-arc span      14421 days (39.48 yr)  
   first obs. used      1981-09-28  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41785  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:57:17  

Additional Information
 Earth MOID = 1.66317 au 
 Jupiter MOID = 2.13509 au 
 T_jup = 3.216 
[ 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 12.51   n/a E2021B10  
diameter diameter 11.531 km 0.119 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 103.942 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.192   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4934 Rhoneranger (1985 JJ)          Discovered 1985-May-15 by Bowell, E. at Flagstaff
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1985 JJ = 1981 SV2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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