Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1119709986000417 4.7782e-08  
a 3.014472212732258 1.87e-08 AU
q 2.67693874882055 1.4634e-07 AU
i 10.84993316944136 5.9036e-06 deg
node 145.5307444734587 2.8325e-05 deg
peri 174.1574090042672 3.6517e-05 deg
M 90.95289325246894 2.3999e-05 deg
tp 2456517.519749750696
(2013-Aug-13.01974975)
0.00012619 JED
period 1911.680693951201
5.23
1.7789e-05
4.87e-08
d
yr
n .1883159677968634 1.7523e-09 deg/d
Q 3.352005676643966 2.0794e-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 = 1.66521 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. 2014-Mar-01) 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Aug-28 13:22 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin