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JPL Small-Body Database Browser
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1368 Numidia (1935 HD)
Classification: Main-belt Asteroid          SPK-ID: 2001368
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06262687492087253 3.531e-08  
a 2.524028099196351 8.4611e-09 au
q 2.365956107131213 9.1319e-08 au
i 14.82199080569145 5.3217e-06 deg
node 18.12535351066512 1.3829e-05 deg
peri 264.2291855056433 4.5675e-05 deg
M 293.6890049391869 4.3793e-05 deg
tp 2458870.288074944711
(2020-Jan-21.78807494)
0.00017836 TDB
period 1464.669726204908
4.01
7.3648e-06
2.016e-08
d
yr
n .2457891998169393 1.2359e-09 deg/d
Q 2.682100091261488 8.991e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2394  
   data-arc span      32258 days (88.32 yr)  
   first obs. used      1931-05-20  
   last obs. used      2019-09-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41534  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:04:10  

Additional Information
 Earth MOID = 1.40508 au 
 Jupiter MOID = 2.41677 au 
 T_jup = 3.405 
[ 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 10.92   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 10
diameter diameter 19.591 km 0.213 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.64 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Binzel, R.P. (1987) Icarus 72, 135-208.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.298   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.860   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=7.87 deg.
U-B UB 0.360   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=7.87 deg.

1368 Numidia (1935 HD)          Discovered 1935-Apr-30 by Jackson, C. at Johannesburg (UO)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1935 HD = 1928 SN = 1931 JF = 1935 KB = 1936 QN = 1953 YK 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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