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JPL Small-Body Database Browser
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269 Justitia
Classification: Main-belt Asteroid          SPK-ID: 2000269
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 72 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2131728452825703 3.3943e-08  
a 2.616242978528039 7.2196e-09 au
q 2.058531018844671 8.812e-08 au
i 5.477275776975111 4.3982e-06 deg
node 156.7340220984131 3.7347e-05 deg
peri 119.5091831461795 3.8585e-05 deg
M 92.61348695155606 1.0417e-05 deg
tp 2458202.862553957502
(2018-Mar-25.36255396)
4.4098e-05 TDB
period 1545.665596741621
4.23
6.398e-06
1.752e-08
d
yr
n .2329093697620669 9.6408e-10 deg/d
Q 3.173954938211408 8.7586e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2920  
   data-arc span      47378 days (129.71 yr)  
   first obs. used      1890-02-11  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44168  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 01:51:37  

Additional Information
 Earth MOID = 1.04838 au 
 Jupiter MOID = 1.98501 au 
 T_jup = 3.368 
[ 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 9.7   n/a MPO267706  
diameter diameter 50.728 km 0.236 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 33.128 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Pilcher, F. (2016) Minor Planet Bull. 43, 135-136.]
geometric albedo albedo 0.061   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B Ld   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

269 Justitia          Discovered 1887-Sep-21 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1942 XY 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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