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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2118361892605257 3.627e-08  
a 2.684521936170146 7.615e-09 au
q 2.115843039225574 9.8094e-08 au
i 12.03000395785801 3.5112e-06 deg
node 128.9141112576038 1.9929e-05 deg
peri 264.2742429306363 2.1508e-05 deg
M 233.7736896620557 1.0228e-05 deg
tp 2459763.808428578879
(2022-Jul-03.30842858)
4.6793e-05 TDB
period 1606.567075797957
4.40
6.8359e-06
1.872e-08
d
yr
n .2240802798857268 9.5345e-10 deg/d
Q 3.253200833114719 9.2282e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3050  
   data-arc span      52615 days (144.05 yr)  
   first obs. used      1876-08-17  
   last obs. used      2020-09-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40947  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-23 18:08:58  

Additional Information
 Earth MOID = 1.16037 au 
 Jupiter MOID = 2.32509 au 
 T_jup = 3.311 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456492.5 (2013-Jul-19.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2097125739270735 3.6288e-08  
q 2.122581571259313 9.7898e-08 au
tp 2456551.758851943280
(2013-Sep-16.25885194)
4.2379e-05 TDB
node 128.9420916114408 1.9924e-05 deg
peri 264.7459543203881 2.1537e-05 deg
i 12.02649200018881 3.51e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3050  
   data-arc span      52615 days (144.05 yr)  
   first obs. used      1876-08-17  
   last obs. used      2020-09-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40947  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-23 18:08:58  

Additional Information
 Jupiter MOID = 2.32509 au 
 T_jup = 3.311 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.316805068942013E-15 -3.545678465604585E-15 -8.303817333061895E-14 3.478154027592E-15 -2.76289790387291E-14 1.53128940347657E-15
q -3.545678465604585E-15 9.583956852420657E-15 2.698771713354123E-13 -9.082193169090117E-15 8.156747332346615E-14 -4.041182027847589E-15
tp -8.303817333061895E-14 2.698771713354123E-13 1.795984745897566E-9 -3.540601129096966E-12 3.721819751482695E-10 2.49175160472447E-13
node 3.478154027592E-15 -9.082193169090117E-15 -3.540601129096966E-12 3.969625602975416E-10 -3.8868302974003E-10 4.963383416802463E-12
peri -2.76289790387291E-14 8.156747332346615E-14 3.721819751482695E-10 -3.8868302974003E-10 4.638519208273707E-10 -4.848326016229512E-12
i 1.53128940347657E-15 -4.041182027847589E-15 2.49175160472447E-13 4.963383416802463E-12 -4.848326016229512E-12 1.232000745746421E-11

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 9.91   n/a E2021B10  
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. 2020-October); 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

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