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1899 Crommelin (1971 UR1)
Classification: Main-belt Asteroid          SPK-ID: 2001899
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1059203730211694 3.7375e-08  
a 2.265166591623196 6.6447e-09 au
q 2.025239301283376 8.5012e-08 au
i 7.275769225602508 3.6797e-06 deg
node 52.12610395559232 2.9083e-05 deg
peri 128.1514258614669 3.313e-05 deg
M 319.8341991502944 1.5646e-05 deg
tp 2459139.432092964916
(2020-Oct-16.93209297)
5.4171e-05 TDB
period 1245.227342896022
3.41
5.4792e-06
1.5e-08
d
yr
n .2891038347766673 1.2721e-09 deg/d
Q 2.505093881963016 7.3485e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3281  
   data-arc span      25875 days (70.84 yr)  
   first obs. used      1949-03-31  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36829  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:07:50  

Additional Information
 Earth MOID = 1.03589 au 
 Jupiter MOID = 2.46378 au 
 T_jup = 3.599 
[ 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 MPO452187  
diameter diameter 5.332 km 0.585 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.0393 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2017) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.122   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1899 Crommelin (1971 UR1)          Discovered 1971-Oct-26 by Kohoutek, L. at Bergedorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1971 UR1 = 1949 FU 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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