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JPL Small-Body Database Browser
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1534 Nasi (1939 BK)
Classification: Main-belt Asteroid          SPK-ID: 2001534
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2519300735430402 2.7919e-08  
a 2.72889463313172 7.12e-09 au
q 2.041404007515638 7.5615e-08 au
i 9.793155994173912 3.6516e-06 deg
node 62.13108762009618 2.1022e-05 deg
peri 42.68349332001258 2.2713e-05 deg
M 32.87063197429238 7.1985e-06 deg
tp 2458850.156681932151
(2020-Jan-01.65668193)
3.2898e-05 TDB
period 1646.563855138374
4.51
6.4441e-06
1.764e-08
d
yr
n .2186371326423575 8.5567e-10 deg/d
Q 3.416385258747803 8.9137e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2708  
   data-arc span      34826 days (95.35 yr)  
   first obs. used      1924-12-22  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39722  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:26:01  

Additional Information
 Earth MOID = 1.06998 au 
 Jupiter MOID = 1.82486 au 
 T_jup = 3.288 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456469.5 (2013-Jun-26.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2512270685901266 2.8024e-08  
q 2.044214307265383 7.5918e-08 au
tp 2457205.137511186596
(2015-Jul-01.63751119)
3.3457e-05 TDB
node 62.19045119739401 2.1028e-05 deg
peri 42.87380777815224 2.2721e-05 deg
i 9.78994601736761 3.6498e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2708  
   data-arc span      34826 days (95.35 yr)  
   first obs. used      1924-12-22  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39722  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:26:01  

Additional Information
 Jupiter MOID = 1.82486 au 
 T_jup = 3.288 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.853226044276783E-16 -2.122215498625028E-15 1.542759697321737E-14 8.014414272179874E-15 -1.96691877497937E-15 -1.995657611850597E-15
q -2.122215498625028E-15 5.763478250501453E-15 -7.756509092215897E-14 -2.310076861642761E-14 -7.652587150051906E-15 5.945283442969157E-15
tp 1.542759697321737E-14 -7.756509092215897E-14 1.119355626537454E-9 -2.090680824817059E-12 3.001727759986722E-10 -1.079343253759457E-12
node 8.014414272179874E-15 -2.310076861642761E-14 -2.090680824817059E-12 4.421966034522832E-10 -4.358557894283423E-10 -1.210566834384703E-11
peri -1.96691877497937E-15 -7.652587150051906E-15 3.001727759986722E-10 -4.358557894283423E-10 5.162280527155768E-10 1.164769369685979E-11
i -1.995657611850597E-15 5.945283442969157E-15 -1.079343253759457E-12 -1.210566834384703E-11 1.164769369685979E-11 1.332118916181633E-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 11.9   n/a MPO452181  
diameter diameter 22.12 km 0.9 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
rotation period rot_per 7.94 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Sauppe, J.; Torno, S.; Lemke-Oliver, R.; Ditteon, R. (2007) Minor Planet Bull. 34, 119-122.]
[Galad, A. (2010) Astron. Astrophys. 514, A55.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.0754   0.006 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
SMASSII spectral type spec_B Cgh   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)

1534 Nasi (1939 BK)          Discovered 1939-Jan-20 by Vaisala, Y. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1939 BK = 1933 UQ = 1957 EA = 1960 UB = 1962 JA = A915 VB = A924 WE = A924 YE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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