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JPL Small-Body Database Browser
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1181 Lilith (1927 CQ)
Classification: Main-belt Asteroid          SPK-ID: 2001181
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1949800177290659 3.6415e-08  
a 2.665401824775508 9.5265e-09 au
q 2.145701729725694 9.5862e-08 au
i 5.601238726290445 3.996e-06 deg
node 260.7019356501778 4.1678e-05 deg
peri 156.0474311621381 4.2816e-05 deg
M 219.5645988327492 1.0929e-05 deg
tp 2459620.535508165414
(2022-Feb-10.03550817)
4.9607e-05 TDB
period 1589.433868414097
4.35
8.5213e-06
2.333e-08
d
yr
n .2264957398694419 1.2143e-09 deg/d
Q 3.185101919825321 1.1384e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2161  
   data-arc span      32384 days (88.66 yr)  
   first obs. used      1930-12-18  
   last obs. used      2019-08-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42796  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:47:46  

Additional Information
 Earth MOID = 1.15929 au 
 Jupiter MOID = 2.16813 au 
 T_jup = 3.349 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.3   n/a MPO473779  
diameter diameter 20.492 km 0.276 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 15.033 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Ferrero, A. (2014) Minor Planet Bull. 41, 184-185.]
[Polakis, T. (2018) Minor Planet Bull. 45, 199-203.]
geometric albedo albedo 0.106   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B X   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)

1181 Lilith (1927 CQ)          Discovered 1927-Feb-11 by Jekhovsky, B. at Algiers
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1927 CQ = 1925 QF = 1943 WC = 1953 CA = 1964 PG = A914 BA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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