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166 Rhodope (A876 PB)
Classification: Main-belt Asteroid          SPK-ID: 2000166
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2118879423886876 3.6354e-08  
a 2.684202122098196 8.5522e-09 au
q 2.11545205749146 9.8519e-08 au
i 12.02987231868565 3.5229e-06 deg
node 128.9157314335003 1.9946e-05 deg
peri 264.3227887958886 2.1542e-05 deg
M 188.884434512634 1.0327e-05 deg
tp 2459763.998636839438
(2022-Jul-03.49863684)
4.7887e-05 TDB
period 1606.279992584845
4.40
7.6767e-06
2.102e-08
d
yr
n .2241203287483421 1.0711e-09 deg/d
Q 3.252952186704931 1.0364e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3011  
   data-arc span      49270 days (134.89 yr)  
   first obs. used      1885-09-10  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41045  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:11:01  

Additional Information
 Earth MOID = 1.1611 au 
 Jupiter MOID = 2.3241 au 
 T_jup = 3.312 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.9   n/a MPO473762  
diameter diameter 52.393 km 0.196 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 4.715 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2001) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Collaborative Asteroid Lightcurve Link (CALL) (2011) http://www.minorplanetobserver.com/DATA/submissions_results.htm]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
geometric albedo albedo 0.046   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.725   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=11.88, mean=11.89, max.=11.89) deg.
U-B UB 0.425   0.035 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=11.88, mean=11.89, max.=11.89) deg.
Tholen spectral type spec_T GC:   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices
SMASSII spectral type spec_B Xe   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)

166 Rhodope (A876 PB)          Discovered 1876-Aug-15 by Peters, C. H. F. at Clinton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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