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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .144334092381081 2.883e-08  
a 2.615646879847719 8.3532e-09 au
q 2.238119861455492 7.3499e-08 au
i 13.63042213641652 3.8308e-06 deg
node 138.7770997949507 1.3817e-05 deg
peri 97.1455476877365 1.9654e-05 deg
M 104.8679049964516 1.3779e-05 deg
tp 2458750.401892502690
(2019-Sep-23.90189250)
5.8955e-05 TDB
period 1545.137367858302
4.23
7.4017e-06
2.026e-08
d
yr
n .2329889933986854 1.1161e-09 deg/d
Q 2.993173898239947 9.5588e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3090  
   data-arc span      25547 days (69.94 yr)  
   first obs. used      1951-02-10  
   last obs. used      2021-01-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41564  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:11:01  

Additional Information
 Earth MOID = 1.27402 au 
 Jupiter MOID = 2.16362 au 
 T_jup = 3.353 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.84   n/a E2021B10  
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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