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1819 Laputa (1948 PC)
Classification: Main-belt Asteroid          SPK-ID: 2001819
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2290975699441662 1.2055e-08  
a 3.136741118211089 1.2261e-08 au
q 2.418121350484982 3.8367e-08 au
i 23.90930094857381 9.8127e-07 deg
node 122.1126933082498 9.9345e-07 deg
peri 166.2924519576282 5.8957e-06 deg
M 4.254412611426539 4.1884e-06 deg
tp 2459176.519758697387
(2020-Nov-23.01975870)
2.3556e-05 TDB
period 2029.160699118499
5.56
1.1897e-05
3.257e-08
d
yr
n .1774132527583399 1.0402e-09 deg/d
Q 3.855360885937196 1.507e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2974  
   data-arc span      33518 days (91.77 yr)  
   first obs. used      1929-02-03  
   last obs. used      2020-11-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39055  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:59:17  

Additional Information
 Earth MOID = 1.40512 au 
 Jupiter MOID = 1.42473 au 
 T_jup = 3.041 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457256.5 (2015-Aug-22.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .227308360108704 1.2084e-08  
q 2.42400899664788 3.8341e-08 au
tp 2457149.063063450785
(2015-May-06.56306345)
2.2487e-05 TDB
node 122.1341308541454 9.9365e-07 deg
peri 166.3992787779042 5.9511e-06 deg
i 23.89645352578572 9.8098e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2974  
   data-arc span      33518 days (91.77 yr)  
   first obs. used      1929-02-03  
   last obs. used      2020-11-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39055  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:59:17  

Additional Information
 Jupiter MOID = 1.42473 au 
 T_jup = 3.041 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.460185224730106E-16 -4.486464732517676E-16 4.008606280837689E-14 4.461111988265423E-16 3.29045155193114E-15 -7.447142801763862E-15
q -4.486464732517676E-16 1.470045500745505E-15 -1.582445270772193E-13 -1.58928774080422E-15 -1.826326427884353E-14 2.443477147416224E-14
tp 4.008606280837689E-14 -1.582445270772193E-13 5.056534401484838E-10 2.734901137706038E-12 1.32072697601116E-10 -3.048283423840099E-12
node 4.461111988265423E-16 -1.58928774080422E-15 2.734901137706038E-12 9.873370987416734E-13 8.987608502093957E-14 1.946886302511604E-13
peri 3.29045155193114E-15 -1.826326427884353E-14 1.32072697601116E-10 8.987608502093957E-14 3.541527829489852E-11 -7.419586713264237E-13
i -7.447142801763862E-15 2.443477147416224E-14 -3.048283423840099E-12 1.946886302511604E-13 -7.419586713264237E-13 9.623225993021812E-13

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 10.45   n/a E2021B10  
diameter diameter 54.165 km 0.325 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 9.8004 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Benishek, V.; Protitch-Benishek, V. (2010) Minor Planet Bull. 37, 64-65.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.050   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1819 Laputa (1948 PC)          Discovered 1948-Aug-09 by Johnson, E. L. at Johannesburg (UO)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1948 PC = 1929 CN = 1974 DY 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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