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648 Pippa (A907 RN)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000648
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2001174511529048 3.7644e-08  
a 3.203357719905453 1.6817e-08 au
q 2.562309937866993 1.2492e-07 au
i 9.880835977687441 4.2383e-06 deg
node 290.8475458500546 2.3619e-05 deg
peri 179.974631822406 2.5581e-05 deg
M 205.7692736267705 9.8e-06 deg
tp 2459897.670507800299
(2022-Nov-14.17050780)
5.8477e-05 TDB
period 2094.144211099099
5.73
1.649e-05
4.515e-08
d
yr
n .171907931694473 1.3537e-09 deg/d
Q 3.844405501943914 2.0182e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2359  
   data-arc span      41187 days (112.76 yr)  
   first obs. used      1907-09-11  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41727  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:18:18  

Additional Information
 Earth MOID = 1.57897 au 
 Jupiter MOID = 1.29836 au 
 T_jup = 3.139 
[ 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 9.6   n/a MPO492757 IRAS observations used: 12
diameter diameter 68.27 km 1.6 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12
rotation period rot_per 9.263 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Moravec, P.; Cochren, J.; Gerhardt, M.; Harris, A.; et al. (2012) Minor Planet Bull. 39, 213-216.]
[Behrend, R. (2015) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.0509   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12
B-V BV 0.676   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=6.44, mean=11.49, max.=16.54) deg.
U-B UB 0.278   0.046 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=6.44, mean=11.49, max.=16.54) deg.
Tholen spectral type spec_T XC   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

648 Pippa (A907 RN)          Discovered 1907-Sep-11 by Kopff, A. at Heidelberg
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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