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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2007025332264045 4.1239e-08  
a 3.988009172838805 2.6005e-08 au
q 3.187605629319919 1.6346e-07 au
i 9.059533751915444 3.7247e-06 deg
node 100.6037810016037 2.8954e-05 deg
peri 294.7432012239415 3.0264e-05 deg
M 174.5627211398202 1.058e-05 deg
tp 2457589.972193147734
(2016-Jul-20.47219315)
7.9686e-05 TDB
period 2908.925841389062
7.96
2.8453e-05
7.79e-08
d
yr
n .1237570222237408 1.2105e-09 deg/d
Q 4.788412716357692 3.1224e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2615  
   data-arc span      25608 days (70.11 yr)  
   first obs. used      1950-06-24  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41594  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:36:20  

Additional Information
 Earth MOID = 2.20956 au 
 Jupiter MOID = .818673 au 
 T_jup = 2.999 
[ show covariance matrix ]

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] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
rotation period rot_per 14.321 h n/a LCDB (Rev. 2019-August); 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] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
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

[ show close-approach data ]
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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