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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .144376815984214 1.2284e-08  
a 2.615153160409628 8.0374e-09 au
q 2.237585673798631 3.095e-08 au
i 13.63057111059052 6.1186e-07 deg
node 138.7777280867381 3.0924e-06 deg
peri 97.05591758341251 9.573e-06 deg
M 150.6449712301009 6.9897e-06 deg
tp 2458750.107574767555
(2019-Sep-23.60757477)
2.9176e-05 TDB
period 1544.699907229187
4.23
7.1212e-06
1.95e-08
d
yr
n .2330549761252668 1.0744e-09 deg/d
Q 2.992720647020624 9.1978e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3140  
   data-arc span      25561 days (69.98 yr)  
   first obs. used      1951-02-10  
   last obs. used      2021-02-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41482  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 14:02:31  

Additional Information
 Earth MOID = 1.27515 au 
 Jupiter MOID = 2.16269 au 
 T_jup = 3.353 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457244.5 (2015-Aug-10.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .143095458762408 1.2309e-08  
q 2.241970188051459 3.1004e-08 au
tp 2457204.289494301893
(2015-Jun-30.78949430)
2.8823e-05 TDB
node 138.8205021041129 3.095e-06 deg
peri 97.21177623369357 9.6243e-06 deg
i 13.62193631143525 6.1175e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3140  
   data-arc span      25561 days (69.98 yr)  
   first obs. used      1951-02-10  
   last obs. used      2021-02-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41482  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 14:02:31  

Additional Information
 Jupiter MOID = 2.16269 au 
 T_jup = 3.353 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.515210513352063E-16 -3.727543178204525E-16 -7.644216615156098E-14 4.126117630502422E-15 -2.511385936558901E-14 2.353616872512501E-15
q -3.727543178204525E-16 9.612306968148012E-16 1.939788377288951E-13 -1.033031531537645E-14 6.357922453539793E-14 -6.038264697349343E-15
tp -7.644216615156098E-14 1.939788377288951E-13 8.307769980535388E-10 -2.014518653676528E-11 2.65276592359725E-10 8.137924133274778E-13
node 4.126117630502422E-15 -1.033031531537645E-14 -2.014518653676528E-11 9.57919619552786E-12 -1.463779305546599E-11 -8.892714507473175E-13
peri -2.511385936558901E-14 6.357922453539793E-14 2.65276592359725E-10 -1.463779305546599E-11 9.262711748873264E-11 1.155315926173763E-12
i 2.353616872512501E-15 -6.038264697349343E-15 8.137924133274778E-13 -8.892714507473175E-13 1.155315926173763E-12 3.742437549361805E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.83   n/a MPCxxxxx  
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. 2020-October); 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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