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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1472509995067112 3.1752e-08  
a 2.405472146392845 7.1864e-09 au
q 2.051263968550944 7.8067e-08 au
i 5.683612155706812 3.4787e-06 deg
node 120.6834142558074 3.9862e-05 deg
peri 158.9229441973496 4.2449e-05 deg
M 67.8257349945761 1.42e-05 deg
tp 2458743.761539026802
(2019-Sep-17.26153903)
5.3878e-05 TDB
period 1362.695825673582
3.73
6.1066e-06
1.672e-08
d
yr
n .2641822138275441 1.1839e-09 deg/d
Q 2.759680324234745 8.2446e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2714  
   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      .43247  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:08:07  

Additional Information
 Earth MOID = 1.03599 au 
 Jupiter MOID = 2.37105 au 
 T_jup = 3.502 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456077.5 (2012-May-30.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1475379183394823 3.1817e-08  
q 2.050582048267498 7.8269e-08 au
tp 2456014.815236141883
(2012-Mar-28.31523614)
5.6436e-05 TDB
node 120.7372746900151 3.993e-05 deg
peri 158.3438693850355 4.2487e-05 deg
i 5.678557237331346 3.4756e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2714  
   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      .43247  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:08:07  

Additional Information
 Jupiter MOID = 2.37105 au 
 T_jup = 3.502 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.012315818963559E-15 -2.483204103129553E-15 -1.368956255358361E-13 -4.076256097856575E-15 -1.416871502140659E-14 -7.692069904249979E-16
q -2.483204103129553E-15 6.12597154132702E-15 2.255051331589947E-13 1.01236345513882E-14 5.817672834760792E-15 1.943857011224354E-15
tp -1.368956255358361E-13 2.255051331589947E-13 3.184970871841789E-9 1.25207301562674E-11 8.34757676273659E-10 1.183115227174946E-12
node -4.076256097856575E-15 1.01236345513882E-14 1.25207301562674E-11 1.594390631280109E-9 -1.583176711751744E-9 4.861681753997439E-12
peri -1.416871502140659E-14 5.817672834760792E-15 8.34757676273659E-10 -1.583176711751744E-9 1.805106521153825E-9 -4.55119886979763E-12
i -7.692069904249979E-16 1.943857011224354E-15 1.183115227174946E-12 4.861681753997439E-12 -4.55119886979763E-12 1.207984128665751E-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-August); 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]
[Polakis, T. (2019) Minor Planet Bull. 46-4, in press.]
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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