Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
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 ]  
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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456718.5 (2014-Mar-02.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2015355947255646 4.1173e-08  
q 3.190172261212842 1.6375e-07 au
tp 2457592.298496151779
(2016-Jul-22.79849615)
7.9543e-05 TDB
node 100.6151033889614 2.894e-05 deg
peri 295.2118164991128 3.0241e-05 deg
i 9.058344328943885 3.7243e-06 deg
  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
 Jupiter MOID = .818673 au 
 T_jup = 2.999 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.695232571269636E-15 -6.687653489389182E-15 9.763086450128792E-14 -9.728569582015533E-16 -4.106522274231167E-14 2.257850330960413E-16
q -6.687653489389182E-15 2.681428209294994E-14 1.709308809059392E-13 5.288921668700369E-15 2.023550943623964E-13 -3.354679137569129E-16
tp 9.763086450128792E-14 1.709308809059392E-13 6.327089117718318E-9 -4.874543749738853E-12 7.396164842978483E-10 -4.648684700817818E-13
node -9.728569582015533E-16 5.288921668700369E-15 -4.874543749738853E-12 8.375480798428326E-10 -8.275258877826932E-10 -9.504461851556814E-12
peri -4.106522274231167E-14 2.023550943623964E-13 7.396164842978483E-10 -8.275258877826932E-10 9.145078639977803E-10 9.297343264209144E-12
i 2.257850330960413E-16 -3.354679137569129E-16 -4.648684700817818E-13 -9.504461851556814E-12 9.297343264209144E-12 1.387023927450572E-11

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-20 17:31 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin