Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
1667 Pels (1930 SY)
Classification: Main-belt Asteroid          SPK-ID: 2001667
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .156362909539094 1.9858e-08  
a 2.190001896064388 4.5403e-09 au
q 1.847566827699628 4.3981e-08 au
i 4.616370933001003 5.2345e-07 deg
node 80.84836082122102 3.8153e-06 deg
peri 196.0659068610462 3.2363e-06 deg
M 57.81306954147914 4.9487e-06 deg
tp 2459206.397122384185
(2020-Dec-22.89712238)
1.592e-05 TDB
period 1183.764094943823
3.24
3.6812e-06
1.008e-08
d
yr
n .3041146471139456 9.4572e-10 deg/d
Q 2.532436964429148 5.2502e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3207  
   data-arc span      33155 days (90.77 yr)  
   first obs. used      1930-09-16  
   last obs. used      2021-06-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40114  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 12:39:03  

Additional Information
 Earth MOID = .831532 au 
 Jupiter MOID = 2.5739 au 
 T_jup = 3.653 
[ 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 11.99   n/a E2021B10  
diameter diameter 8.998 km 1.130 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 3.268 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Wisniewski, W.Z.; Michalowski, T.M.; Harris, A.W.; McMillan, R.S. (1997) Icarus 126, 395-449; 1995, Lunar & Planetary Sci. XXVI, 1511-1512.]
[Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; et al. (2012) Astron. Astrophys. 546, A72.]
[Stephens, R. D.; Warner, B. D. (2019) MPB 46, 298-301.]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Stephens, R.D.; Warner, B.D. (2020) Minor Planet Bull. 47, 275-284.]
geometric albedo albedo 0.455   0.174 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
SMASSII spectral type spec_B Sa   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)

1667 Pels (1930 SY)          Discovered 1930-Sep-16 by Van Gent, H. at Johannesburg (LS)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1930 SY = 1933 MD = 1936 JA = 1939 FX = 1942 CF = 1949 HM1 = 1952 FC1 = 1953 VT1 = 1953 XD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jul-26 15:00 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin