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JPL Small-Body Database Browser
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1129 Neujmina (1929 PH)
Classification: Main-belt Asteroid          SPK-ID: 2001129
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08295649913474024 4.1686e-08  
a 3.021650482657372 1.2924e-08 au
q 2.770984937007318 1.2828e-07 au
i 8.619680219780527 4.4004e-06 deg
node 269.2181182248469 2.9741e-05 deg
peri 139.8172460457483 3.9967e-05 deg
M 317.5041743836251 2.5659e-05 deg
tp 2458826.968883367764
(2019-Dec-09.46888337)
0.00013672 TDB
period 1918.513096989447
5.25
1.2309e-05
3.37e-08
d
yr
n .1876453179104778 1.2039e-09 deg/d
Q 3.272316028307426 1.3996e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2603  
   data-arc span      34296 days (93.90 yr)  
   first obs. used      1926-01-10  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41887  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:54:14  

Additional Information
 Earth MOID = 1.78828 au 
 Jupiter MOID = 2.04279 au 
 T_jup = 3.224 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.20   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
diameter diameter 34.576 km 0.196 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.0844 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Carbo, L.; Kragh, K.; Krotz, J.; Meiers, A.; et al. (2009) Minor Planet Bull. 36, 91-94.]
[Ditteon, R.; West, J. (2011) Minor Planet Bull. 38, 214-217.]
geometric albedo albedo 0.138   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.780   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=4.11 deg.
U-B UB 0.410   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=4.11 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo

1129 Neujmina (1929 PH)          Discovered 1929-Aug-08 by Parchomenko, P. at Simeis
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1929 PH = 1926 AE = A914 WE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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