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JPL Small-Body Database Browser
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2557 Putnam (1981 SL1)
Classification: Main-belt Asteroid          SPK-ID: 2002557
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1563214310580934 3.4624e-08  
a 2.349324938420104 6.9932e-09 au
q 1.982075102025806 7.8983e-08 au
i 6.068567997473152 3.5027e-06 deg
node 188.2462929012336 3.1932e-05 deg
peri 189.6555397297851 3.3771e-05 deg
M 150.716440848105 1.1593e-05 deg
tp 2458049.855647899156
(2017-Oct-23.35564790)
4.1786e-05 TDB
period 1315.264384169513
3.60
5.8727e-06
1.608e-08
d
yr
n .2737092286029716 1.2221e-09 deg/d
Q 2.716574774814401 8.0864e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2584  
   data-arc span      20299 days (55.58 yr)  
   first obs. used      1963-10-13  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40054  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 21:38:41  

Additional Information
 Earth MOID = .983168 au 
 Jupiter MOID = 2.74094 au 
 T_jup = 3.535 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.6   n/a MPO337269  
diameter diameter 7.465 km 0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 35.68 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2006) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.348   0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

2557 Putnam (1981 SL1)          Discovered 1981-Sep-26 by Skiff, B. A. and Thomas, N. G. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 SL1 = 1956 VF = 1963 TE = 1970 PN = 1970 QN1 = 1976 GX4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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