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JPL Small-Body Database Browser
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1203 Nanna (1931 TA)
Classification: Main-belt Asteroid          SPK-ID: 2001203
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2493049767781182 3.1254e-08  
a 2.884345454457967 1.2191e-08 au
q 2.165263777914253 9.3092e-08 au
i 5.994091179778686 3.5924e-06 deg
node 224.5290533423467 4.304e-05 deg
peri 177.1843726326707 4.3935e-05 deg
M 296.7948198714183 9.3419e-06 deg
tp 2458914.637302821880
(2020-Mar-06.13730282)
4.6664e-05 TDB
period 1789.243045994219
4.90
1.1343e-05
3.106e-08
d
yr
n .2012024027736046 1.2756e-09 deg/d
Q 3.603427131001681 1.523e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2448  
   data-arc span      34019 days (93.14 yr)  
   first obs. used      1926-10-07  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45105  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:18:38  

Additional Information
 Earth MOID = 1.1733 au 
 Jupiter MOID = 1.81284 au 
 T_jup = 3.238 
[ 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 11.6   n/a MPO416717  
diameter diameter 35.18 km 3.9 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
rotation period rot_per 18.54 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D. (2011) Minor Planet Bull. 38, 96-101.]
geometric albedo albedo 0.0473   0.012 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2

1203 Nanna (1931 TA)          Discovered 1931-Oct-05 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1931 TA = 1926 RH = 1978 AD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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