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3492 Petra-Pepi (1985 DQ)
Classification: Main-belt Asteroid          SPK-ID: 2003492
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1442719073922135 3.9322e-08  
a 2.617086274318727 9.4022e-09 au
q 2.239514245712783 1.0409e-07 au
i 13.62757872475435 3.8804e-06 deg
node 138.7749887512559 1.7976e-05 deg
peri 97.36996146471205 2.2803e-05 deg
M 58.07254123491457 1.3959e-05 deg
tp 2458751.044078956441
(2019-Sep-24.54407896)
5.9786e-05 TDB
period 1546.412980489459
4.23
8.3335e-06
2.282e-08
d
yr
n .2327968043090633 1.2545e-09 deg/d
Q 2.994658302924671 1.0759e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2532  
   data-arc span      25329 days (69.35 yr)  
   first obs. used      1951-02-10  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44117  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:58:10  

Additional Information
 Earth MOID = 1.27657 au 
 Jupiter MOID = 2.16404 au 
 T_jup = 3.352 
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Orbital Elements at Epoch 2456559.5 (2013-Sep-24.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1442168673408337 3.9597e-08  
q 2.240210520727726 1.0464e-07 au
tp 2457202.351197469798
(2015-Jun-28.85119747)
5.8999e-05 TDB
node 138.8601250011727 1.8022e-05 deg
peri 96.79208101470243 2.2749e-05 deg
i 13.60724806113974 3.8748e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2532  
   data-arc span      25329 days (69.35 yr)  
   first obs. used      1951-02-10  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44117  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:58:10  

Additional Information
 Jupiter MOID = 2.16404 au 
 T_jup = 3.352 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.567931038997999E-15 -4.131762574543223E-15 -5.122501030411758E-13 1.222921682793791E-14 -7.982485857711512E-14 -3.568371032451308E-15
q -4.131762574543223E-15 1.094934607382111E-14 1.351511216604721E-12 -3.251966017226859E-14 2.041295226321695E-13 9.349031124506815E-15
tp -5.122501030411758E-13 1.351511216604721E-12 3.480865981162583E-9 -1.305481354753458E-11 8.362037524533822E-10 6.826842036707098E-12
node 1.222921682793791E-14 -3.251966017226859E-14 -1.305481354753458E-11 3.247829666989504E-10 -3.18114771204748E-10 9.511836618783086E-12
peri -7.982485857711512E-14 2.041295226321695E-13 8.362037524533822E-10 -3.18114771204748E-10 5.175352636320223E-10 -7.885896673557179E-12
i -3.568371032451308E-15 9.349031124506815E-15 6.826842036707098E-12 9.511836618783086E-12 -7.885896673557179E-12 1.501428550851175E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.8   n/a MPO473813  
diameter diameter 11.658 km 0.127 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 47.05 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2011) Minor Planet Bull. 38, 211-212.]
[Hanus, J.; Broz, M.; Durech, J.; Warner, B.D.; et al. (2013) Astron. Astrophys. 559, A134.]
geometric albedo albedo 0.248   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

3492 Petra-Pepi (1985 DQ)          Discovered 1985-Feb-16 by Mahrova, M. at Klet
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1985 DQ = 1951 CG = 1977 JD1 = 1978 SA1 = 1978 TK9 = 1980 CB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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