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JPL Small-Body Database Browser
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2381 Landi (1976 AF)
Classification: Main-belt Asteroid          SPK-ID: 2002381
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1670044031024289 4.6187e-08  
a 2.612635360304421 1.0252e-08 au
q 2.176313751432482 1.1943e-07 au
i 13.63147506883215 3.9193e-06 deg
node 150.1330211875839 2.0699e-05 deg
peri 278.0095038080736 2.3476e-05 deg
M 218.7783354731766 1.1994e-05 deg
tp 2459605.583698524939
(2022-Jan-26.08369853)
5.2408e-05 TDB
period 1542.469650098224
4.22
9.0788e-06
2.486e-08
d
yr
n .2333919503551173 1.3737e-09 deg/d
Q 3.04895696917636 1.1964e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2220  
   data-arc span      24985 days (68.41 yr)  
   first obs. used      1951-03-10  
   last obs. used      2019-08-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42452  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:19:58  

Additional Information
 Earth MOID = 1.23923 au 
 Jupiter MOID = 2.33337 au 
 T_jup = 3.350 
[ 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 11.7   n/a MPO337267  
diameter diameter 13.054 km 0.081 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.989 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Almeida, R.; Angeli, C.A.; Duffard, R.; Lazzaro, D. (2004) Astron. Astrophys. 415, 403-406.]
[Klinglesmith III, D.A.; Hanowell, J.; Risley, E.; Turk, J.; et al. (2014) Minor Planet Bull. 41, 139-143.]
[Stephens, R.D. (2014) Minor Planet Bull. 41, 171-175.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
[Owings, L.E. (2018) Minor Planet Bull. 45, 227-231.]
geometric albedo albedo 0.286   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2381 Landi (1976 AF)          Discovered 1976-Jan-03 by Felix Aguilar Observatory at El Leoncito
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1976 AF = 1951 EG1 = 1953 QP = 1968 FF = 1970 SD = 1978 NN3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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