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JPL Small-Body Database Browser
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1738 Oosterhoff (1930 SP)
Classification: Main-belt Asteroid          SPK-ID: 2001738
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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2030278055953413 3.6641e-08  
a 2.183536567158304 4.2229e-09 au
q 1.740217929490969 8.0657e-08 au
i 4.876894742653489 3.3532e-06 deg
node 44.10263882519109 4.3127e-05 deg
peri 284.3524008442902 4.3742e-05 deg
M 302.103820748522 8.7329e-06 deg
tp 2459190.033740822383
(2020-Dec-06.53374082)
2.8837e-05 TDB
period 1178.525898914409
3.23
3.4189e-06
9.36e-09
d
yr
n .305466345993424 8.8615e-10 deg/d
Q 2.62685520482564 5.0803e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3021  
   data-arc span      33784 days (92.50 yr)  
   first obs. used      1927-10-30  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42132  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:29:17  

Additional Information
 Earth MOID = .737225 au 
 Jupiter MOID = 2.72944 au 
 T_jup = 3.647 
[ 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 12.5   n/a MPO358644  
diameter diameter 7.887 km 0.090 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 4.4486 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hamanowa, H.; Hamanowa, H. (2011) http://www2.ocn.ne.jp/~hamaten/astlcdata.htm]
[Hanus, J.; Broz, M.; Durech, J.; Warner, B.D.; et al. (2013) Astron. Astrophys. 559, A134.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Hanus, J.; Delbo, M.; Durech, J.; Ali-Lagoa, V. (2018) Icarus 309, 297-337.]
geometric albedo albedo 0.341   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B S   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)

1738 Oosterhoff (1930 SP)          Discovered 1930-Sep-16 by Van Gent, H. at Johannesburg (LS)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1960-Aug-05 15:42 < 00:01 Eunom 0.0429506998650655 0.0429492385026045 0.0429521612940131 5.17572246733957 5.17572240419258 2437152.153919938 0.549638450090047 112.68198782376 14.6935522343328 -50.3209132608705 338299.410835923 T 36 CATAB v2.0f-lin.ifort 2020-May-20 01:29:30 2020-May-20 01:29
1973-Jun-25 19:45 < 00:01 Eunom 0.0287295278423548 0.0287292310873951 0.0287298245984444 5.18866163726205 5.18866154309259 2441859.322947450 0.474813208583899 87.2565593973353 14.7081823242696 -88.9714744447622 291977.162497272 T 36 CATAB v2.0f-lin.ifort 2020-May-20 01:29:30 2020-May-20 01:29
1986-May-13 23:20 < 00:01 Eunom 0.0478141819516735 0.0478129888369061 0.0478153750706829 5.21047610506839 5.21047604872282 2446564.472334880 0.417388547172113 63.8319799318249 15.1799900619966 21.9897008566777 204629.483452724 T 36 CATAB v2.0f-lin.ifort 2020-May-20 01:29:30 2020-May-20 01:29

Alternate Designations
 1930 SP = 1927 UF = 1939 GO = 1942 FD = 1943 TO = 1946 OG = 1949 JE = 1949 KH = 1952 HV = 1952 JJ = 1959 RB1 = 2016 FC6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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