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JPL Small-Body Database Browser
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1257 Mora (1932 PE)
Classification: Main-belt Asteroid          SPK-ID: 2001257
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0824938507473148 3.5118e-08  
a 2.488593387350701 7.3208e-09 au
q 2.283299735883838 8.8637e-08 au
i 3.922841014864109 3.9217e-06 deg
node 213.9358812378675 4.7245e-05 deg
peri 18.87234661107365 5.2771e-05 deg
M 226.2378916947685 2.609e-05 deg
tp 2459533.294760841872
(2021-Nov-14.79476084)
0.00010479 TDB
period 1433.934589797223
3.93
6.3274e-06
1.732e-08
d
yr
n .2510574767925145 1.1078e-09 deg/d
Q 2.693887038817564 7.9247e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3017  
   data-arc span      33408 days (91.47 yr)  
   first obs. used      1928-08-17  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43762  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:49:51  

Additional Information
 Earth MOID = 1.27278 au 
 Jupiter MOID = 2.29 au 
 T_jup = 3.466 
[ 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 12.1   n/a MPO412170  
diameter diameter 21.392 km 1.126 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.2948 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Binzel, R.P. (1987) Icarus 72, 135-208.]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.051   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
B-V BV 0.630   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=2.13 deg.
U-B UB 0.320   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=2.13 deg.

1257 Mora (1932 PE)          Discovered 1932-Aug-08 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1932 PE = 1928 QA = 1935 KL = 1964 VO = 1964 WA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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