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1148 Rarahu (1929 NA)
Classification: Main-belt Asteroid          SPK-ID: 2001148
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1120844782657067 4.7788e-08  
a 3.014698037163201 1.8835e-08 AU
q 2.676797180539114 1.465e-07 AU
i 10.84988759344886 5.9035e-06 deg
node 145.5302488022181 2.8325e-05 deg
peri 174.1784572061929 3.6496e-05 deg
M 53.25933989183844 2.3872e-05 deg
tp 2456517.649186092715
(2013-Aug-13.14918609)
0.00012606 JED
period 1911.895513789999
5.23
1.7918e-05
4.906e-08
d
yr
n .1882948086877211 1.7646e-09 deg/d
Q 3.352598893787289 2.0946e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1330  
   data-arc span      30787 days (84.29 yr)  
   first obs. used      1929-07-12  
   last obs. used      2013-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5564  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:15:56  

Additional Information
 Earth MOID = 1.66319 AU 
 T_jup = 3.212 
[ 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 10.15 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3
diameter diameter 33.23 km 2.9 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3
rotation period rot_per 6.5447 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Published Reference List:
[Behrend, R. (2002) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.1393   0.028 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3
B-V BV .868 mag .013 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=3; phase (min.=2.65, mean=8.27, max.=15.33) deg.
U-B UB .444 mag .022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=2.65, mean=4.74, max.=6.84) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 4 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B K   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)

1148 Rarahu (1929 NA)          Discovered 1929-Jul-05 by Deutsch, A. at Simeis (094)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1929 NA = A924 OA 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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