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1139 Atami (1929 XE)
Classification: Mars-crossing Asteroid          SPK-ID: 2001139
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2555011758290908 4.9723e-08  
a 1.947630388332713 3.8986e-09 AU
q 1.450008534033236 9.7304e-08 AU
i 13.08518887939447 5.7563e-06 deg
node 213.36874419935 1.9791e-05 deg
peri 206.6322080904925 2.2362e-05 deg
M 35.57808843233799 1.1095e-05 deg
tp 2456702.384335498930
(2014-Feb-13.88433550)
3.0474e-05 JED
period 992.791933933139
2.72
2.9809e-06
8.161e-09
d
yr
n .3626137438222224 1.0888e-09 deg/d
Q 2.44525224263219 4.8947e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1165  
   data-arc span      30752 days (84.19 yr)  
   first obs. used      1929-12-01  
   last obs. used      2014-02-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47326  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 17:27:26  

Additional Information
 Earth MOID = .470437 AU 
 T_jup = 3.824 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.51 mag n/a PDS3 (MPC 17261)  
rotation period rot_per 27.446 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Koff, R.A. (2006) Minor Planet Bul. 33, 31-33.]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2013) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
B-V BV .920 mag .020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=7.94 deg.
U-B UB .497 mag .022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=7.94 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 4 color indices
SMASSII spectral type spec_B S   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)

1139 Atami (1929 XE)          Discovered 1929-Dec-01 by Oikawa, O. and Kubokawa, K. at Tokyo
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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