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JPL Small-Body Database Browser
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2976 Lautaro (1974 HR)
Classification: Outer Main-belt Asteroid          SPK-ID: 2002976
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1451712715375134 3.4543e-08  
a 3.337089868694413 2.1215e-08 au
q 2.852640289221092 1.2158e-07 au
i 9.834375582076252 3.8191e-06 deg
node 206.7190380393507 2.3531e-05 deg
peri 187.8623475270312 2.732e-05 deg
M 337.9108070333051 1.5046e-05 deg
tp 2459137.124199047767
(2020-Oct-14.62419905)
9.3335e-05 TDB
period 2226.64140475184
6.10
2.1233e-05
5.813e-08
d
yr
n .1616784809766538 1.5417e-09 deg/d
Q 3.821539448167734 2.4294e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2486  
   data-arc span      42418 days (116.13 yr)  
   first obs. used      1903-10-27  
   last obs. used      2019-12-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46169  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:35:45  

Additional Information
 Earth MOID = 1.85939 au 
 Jupiter MOID = 1.61556 au 
 T_jup = 3.121 
[ 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 10.8   n/a MPO332845  
diameter diameter 46.184 km 0.100 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 17.41 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:
[Shipley, H.; Dillard, A.; Kendall, J.; Reichert, M.; et al. (2008) Minor Planet Bull. 35, 99-101.]
geometric albedo albedo 0.044   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2976 Lautaro (1974 HR)          Discovered 1974-Apr-22 by Torres, C. at Cerro El Roble
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1974 HR = 1953 XA = 1957 NB = 1965 XA = 1972 YP1 = 1977 VV = 1983 TR = A903 UG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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