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30950 (1994 PJ9)
Classification: Main-belt Asteroid          SPK-ID: 2030950
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04716424934887492 3.3636e-08  
a 2.239733581538328 7.2761e-09 au
q 2.134098228423606 7.3207e-08 au
i 4.440868711066609 3.4493e-06 deg
node 324.3820198515884 5.0903e-05 deg
peri 187.7161094828491 6.6378e-05 deg
M 129.1830553864108 4.2515e-05 deg
tp 2458761.164779877983
(2019-Oct-04.66477988)
0.00014443 TDB
period 1224.314433273293
3.35
5.9661e-06
1.633e-08
d
yr
n .2940421106018606 1.4329e-09 deg/d
Q 2.34536893465305 7.6193e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1169  
   data-arc span      9972 days (27.30 yr)  
   first obs. used      1993-03-21  
   last obs. used      2020-07-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48619  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:42:48  

Additional Information
 Earth MOID = 1.14425 au 
 Jupiter MOID = 2.63641 au 
 T_jup = 3.630 
[ 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 15.47   n/a MPCxxxxx  
diameter diameter 2.128 km 0.253 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.324   0.079 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

30950 (1994 PJ9)          Discovered 1994-Aug-10 by Elst, E. W. at La Silla
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1994 PJ9 = 1993 FJ64 = 2001 RA74 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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