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JPL Small-Body Database Browser
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1529 Oterma (1938 BC)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001529
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2004693281738839 4.1815e-08  
a 3.989440606760156 2.7256e-08 au
q 3.189680128533336 1.6524e-07 au
i 9.059540663430083 4.4352e-06 deg
node 100.6022654115857 2.9611e-05 deg
peri 294.8684223421891 3.1548e-05 deg
M 124.9090114429208 1.1114e-05 deg
tp 2457590.648062270914
8.7134e-05 TDB
period 2910.492152510546
n .1236904211163977 1.2676e-09 deg/d
Q 4.789201084986976 3.2721e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2197  
   data-arc span      25159 days (68.88 yr)  
   first obs. used      1950-06-24  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43837  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:23:55  

Additional Information
 Earth MOID = 2.21104 au 
 Jupiter MOID = .815767 au 
 T_jup = 2.999 
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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 10.0   n/a MPO492768  
diameter diameter 56.319 km 0.471 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (  
rotation period rot_per 14.321 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Ditteon, R.; Adam, A.; Doyel, M.; Gibson, J.; et al. (2018) Minor Planet Bull. 45, 13-16.]
[Warner, B.D.; Stephens, R.D.; Coley, D.R. (2018) Minor Planet Bull. 45, 147-161.]
geometric albedo albedo 0.054   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (  
B-V BV 0.764   0.013 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=8.26, mean=9.15, max.=10.19) deg.
U-B UB 0.386   0.105 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=9.01, mean=9.60, max.=10.19) deg.
Tholen spectral type spec_T P:   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

1529 Oterma (1938 BC)          Discovered 1938-Jan-26 by Vaisala, Y. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1938 BC = 1950 PV = 1959 RD1 = A912 VO 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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