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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1057781024446618 3.6813e-08  
a 2.264833000032295 6.5693e-09 au
q 2.025263262934828 8.3839e-08 au
i 7.275960382363292 3.623e-06 deg
node 52.12169645791052 2.8735e-05 deg
peri 128.1562817857216 3.2843e-05 deg
M 17.65728419792386 1.5654e-05 deg
tp 2459139.437566266178
(2020-Oct-16.93756627)
5.4111e-05 TDB
period 1244.952275659734
3.41
5.4166e-06
1.483e-08
d
yr
n .2891677111150515 1.2581e-09 deg/d
Q 2.504402737129762 7.2642e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3444  
   data-arc span      26225 days (71.80 yr)  
   first obs. used      1949-03-31  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36458  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:58:59  

Additional Information
 Earth MOID = 1.03534 au 
 Jupiter MOID = 2.46339 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 13.05   n/a E2021B10  
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. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2017) http://www.asu.cas.cz/~ppravec/neo.htm]
[McNeill, A.; Mommert, M.; Trilling, D.E.; Llama, J.; Skiff, B. (2019) Ap. J. Suppl. Series 245, id.29.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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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