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JPL Small-Body Database Browser
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6249 Jennifer (1991 JF1)
Classification: Mars-crossing Asteroid          SPK-ID: 2006249
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1419925467896146 4.7432e-08  
a 1.914342690559967 5.7299e-09 au
q 1.642520296499274 9.2013e-08 au
i 28.10782390703979 5.5011e-06 deg
node 221.6879655619737 8.8853e-06 deg
peri 151.5443619608029 1.8833e-05 deg
M 184.4339582325522 1.8992e-05 deg
tp 2459472.308727852558
(2021-Sep-14.80872785)
5.2032e-05 TDB
period 967.4487179696365
2.65
4.3436e-06
1.189e-08
d
yr
n .3721127469738387 1.6707e-09 deg/d
Q 2.18616508462066 6.5436e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1718  
   data-arc span      24014 days (65.75 yr)  
   first obs. used      1954-04-09  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36952  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 20:22:32  

Additional Information
 Earth MOID = .667716 au 
 Jupiter MOID = 3.28301 au 
 T_jup = 3.777 
[ 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 13.0   n/a MPO337307  
rotation period rot_per 4.9566 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D.; Gross, J.; Harris, A.W. (2006) Minor Planet Bull. 33, 23-24.]
[Warner, B.D. (2010) Minor Planet Bull. 37, 161-165.]
[Warner, B.D. (2014) Minor Planet Bull. 41, 27-32.]
[Warner, B.D. (2014) Minor Planet Bull. 41, 102-112.]
[Warner, B.D. (2015) Minor Planet Bull. 42, 267-276.]
SMASSII spectral type spec_B Xe   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)

6249 Jennifer (1991 JF1)          Discovered 1991-May-07 by Helin, E. F. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1991 JF1 = 1968 UL1 = 1976 UJ5 = 1978 JE2 = 1994 JL1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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