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1914 Hartbeespoortdam (1930 SB1)
Classification: Main-belt Asteroid          SPK-ID: 2001914
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1475378566680914 3.1723e-08  
a 2.406217226223884 7.1705e-09 au
q 2.051209093988973 7.8083e-08 au
i 5.68220113254026 3.4781e-06 deg
node 120.6915870451761 3.9901e-05 deg
peri 159.0900140431631 4.2486e-05 deg
M 322.0387092886842 1.4251e-05 deg
tp 2458744.260357415617
(2019-Sep-17.76035742)
5.3882e-05 TDB
period 1363.329004358506
3.73
6.0941e-06
1.668e-08
d
yr
n .2640595181713987 1.1803e-09 deg/d
Q 2.761225358458796 8.2284e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2710  
   data-arc span      32522 days (89.04 yr)  
   first obs. used      1930-09-28  
   last obs. used      2019-10-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43261  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:10:17  

Additional Information
 Earth MOID = 1.03534 au 
 Jupiter MOID = 2.36941 au 
 T_jup = 3.501 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456075.5 (2012-May-28.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1475392176545354 3.1817e-08  
q 2.050581810819913 7.8269e-08 au
tp 2456014.815320123707
(2012-Mar-28.31532012)
5.6479e-05 TDB
node 120.7372983609885 3.9953e-05 deg
peri 158.343863673813 4.2513e-05 deg
i 5.678553403516452 3.476e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2710  
   data-arc span      32522 days (89.04 yr)  
   first obs. used      1930-09-28  
   last obs. used      2019-10-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43261  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:10:17  

Additional Information
 Jupiter MOID = 2.36941 au 
 T_jup = 3.501 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.012318826624427E-15 -2.483231602843122E-15 -1.367086593486719E-13 -4.111482195679045E-15 -1.407868127518078E-14 -7.705358643743427E-16
q -2.483231602843122E-15 6.126112294860647E-15 2.247111547699519E-13 1.02106411325935E-14 5.49634414889902E-15 1.947119095245101E-15
tp -1.367086593486719E-13 2.247111547699519E-13 3.18989992166187E-9 1.252662896920854E-11 8.362089848925825E-10 1.183432631390955E-12
node -4.111482195679045E-15 1.02106411325935E-14 1.252662896920854E-11 1.59625386491212E-9 -1.585030503959435E-9 4.932295379354736E-12
peri -1.407868127518078E-14 5.49634414889902E-15 8.362089848925825E-10 -1.585030503959435E-9 1.807381802746684E-9 -4.621425283842537E-12
i -7.705358643743427E-16 1.947119095245101E-15 1.183432631390955E-12 4.932295379354736E-12 -4.621425283842537E-12 1.208250936235078E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.0   n/a MPO439082  
diameter diameter 9.561 km 0.186 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.331 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2015) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.212   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

1914 Hartbeespoortdam (1930 SB1)          Discovered 1930-Sep-28 by Van Gent, H. at Johannesburg (LS)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1930 SB1 = 1937 LK = 1952 LE = 1956 QA = 1970 EU 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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