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JPL Small-Body Database Browser
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424 Gratia (A896 YD)
Classification: Main-belt Asteroid          SPK-ID: 2000424
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 68 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1086755699653286 3.7304e-08  
a 2.773617885389283 8.221e-09 au
q 2.472193380828573 1.052e-07 au
i 8.222157839023561 3.8991e-06 deg
node 99.15047836488525 2.6254e-05 deg
peri 333.7898989326767 3.1001e-05 deg
M 11.23745353369281 1.6848e-05 deg
tp 2459343.833582351397
(2021-May-09.33358235)
7.8879e-05 TDB
period 1687.207007944483
4.62
7.5014e-06
2.054e-08
d
yr
n .2133703797488291 9.4865e-10 deg/d
Q 3.075042389949993 9.1145e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3158  
   data-arc span      44875 days (122.86 yr)  
   first obs. used      1898-05-15  
   last obs. used      2021-03-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41347  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 11:02:58  

Additional Information
 Earth MOID = 1.49018 au 
 Jupiter MOID = 2.16203 au 
 T_jup = 3.313 
[ 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 9.60   n/a MPCxxxxx  
diameter diameter 102.565 km 0.644 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 20.075 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Florczak, M.; Dotto, E.; Barucci, M.A.; Birlan, M.; et al. (1997) Planet. Space Sci. 45, 1423-1435.]
[Polakis, T. (2018) Minor Planet Bull. 45, 347-352.]
geometric albedo albedo 0.027   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

424 Gratia (A896 YD)          Discovered 1896-Dec-31 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A896 YD = 1948 DB = 1959 MA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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