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968 Petunia (A921 WJ)
Classification: Main-belt Asteroid          SPK-ID: 2000968
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 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1364702824124038 1.1253e-08  
a 2.865058956234531 8.9291e-09 au
q 2.474063551349017 3.082e-08 au
i 11.59850772258007 3.3066e-07 deg
node 208.8408718695882 3.8128e-06 deg
peri 297.495652603447 9.5551e-06 deg
M 56.48913385937055 7.3775e-06 deg
tp 2458922.553514698556
(2020-Mar-14.05351470)
3.6168e-05 TDB
period 1771.327118550278
4.85
8.2807e-06
2.267e-08
d
yr
n .2032374462231673 9.501e-10 deg/d
Q 3.256054361120044 1.0148e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3307  
   data-arc span      36301 days (99.39 yr)  
   first obs. used      1921-10-25  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .3971  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:43:28  

Additional Information
 Earth MOID = 1.5091 au 
 Jupiter MOID = 1.8479 au 
 T_jup = 3.256 
[ 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 10.23   n/a E2021B10  
diameter diameter 24.422 km 0.232 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 61.280 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2010) Minor Planet Bull. 37, 122-123.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.233   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.869   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=5.70 deg.
U-B UB 0.372   0.082 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=5.70 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

968 Petunia (A921 WJ)          Discovered 1921-Nov-24 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A921 WJ = 1935 QK1 = 1948 KC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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